 Good morning, Gevin. Hi, Surya. Good evening, sir. Can I go through previous symptom papers? Yes, you can. Please, no doubt. Congratulations. No, that won't be a case, but generally what happens, like as there is a Sankamon paper on this Sunday, some background activity might be going on. Okay, so those papers are not that easily accessible. At times they close that by themselves and all that because the whole activity is going on to a window called as Kemon. Okay, there will be a minor discussion of electricity as well, but the primary discussion on the scenario is to everyone, guys. Please note whatever is stated in the notification given to you in the slivers that is coming. Okay, good Gupta. Good, good, good, good. Kemon stands for Center, but Learned and Working Learned is, that might be a scenario, but yes, it is rectified in the morning. Ashlesha, have you checked it? I mean today's center, please note, especially INR, YPR and CA people, refraction is coming in the syllabus. Okay, I told that it will be coming till reflection. No, refraction part, refractive index is coming for Kemon. Okay, just telling you, for not for CHK, not for CHK and I am stating it for YPR, CA and INR. What I want to state here is whatever is the notification shared, whatever is the notification shared about the slivers, that is straight the slivers. Okay, no variation, whatever is stated. Okay, Ashlesha, we can get in touch about it. Like morning, it is sorted. Okay, just what's up me, I guess there might be a variation in your password, so I'll just post it to you. Sharing the screen, visible, visible, visible, visible, visible, visible, good. And here is your quiz, ongoing quiz. Good, good, good, good, good, good, good, good, good, good, good, good, good. I don't remember whether I, okay, guys, one second, I will just check if I have started because I created the PPT in dark mode, but I'll just check it in a minute, in less than a minute. You can check it. If not, I can make also, don't worry. Yes, it is in dark mode now. Visible, visible, visible, visible, visible. Why, Surya, what happened? Someone is over and mute, please mute, please put yourself over mute. Good, thank you. Good, good, good, good, good, good. Gupta, go back and come back. No, Gupta is not ready. Okay. A quick R for ready. NR for not ready. Anyone, please put your microphone over mute. Someone is over and mute. Okay, there is Gupta, Gupta is at NR. Okay, Gupta, no problem. I'm waiting. I guess Gupta is a 55th one or 54th one. Gupta. Change it quickly. Not happening. I understood what is the mistake. And here we go to the quiz. How much water should be filled in a container 21 centimeter in height so that it appears half filled when viewed from the top of a container of the same container. Okay, so the refractive index is 4 by 3. Guys, relax, concentrate over the question. Yes, CHK10. CHK10, beta, we have been through it. If I remember, we are doing lens formula. Yeah, 24 people got it right. 24 people got it right. Okay, no problem, no problem, no problem. And surprisingly, got it right. Yeah, good. Yeah, here's the question. Is the question visible? Is the question visible? I guess the question is very visible, right? But I am doing on dark mode only. Good, good, good, good, good, good, good. Now the question, read the question, read it so that now again scenario, understand the scenario. How much water should be filled in a container 21 centimeter in height so that it appears half filled. That means why it should appear that it is filled till half of 21, that is 10.5. Yes or no? Why or N? Line number one, why or N? For very obvious reason, it has to be filled a bit up. Yes or no? Clear? That's what Surya said, I use common sense, well with the answer, right? But sir, I think once again, you said portions for chemon are only till reflections, momenta at the beginning of this session, I said, like when we discuss about that in the class, okay? So I said, it will be, I'll try to make it till reflection only, but the papers etc, etc. Okay, only two topics are coming from refraction, clear? Clear, clear, clear, clear, clear. Refraction that is refractive index, only slab, glass slab, okay? And prism, clear? That rainbow thingy or not, okay? No problem, no problem, no problem, no problem. Can we proceed? Yep, good. So yes, by this way, the answer can be 12, but it can be none of these as well, right? But it can be none of these as well, Surya? There was a slight chance key, yeah, we'll come to that. There was a slight chance key, your calculation might be wrong. Then, simple scenario, simple scenario, okay? Height apparent upon height actual will have a proportion, what it should be equal to? It should be equal to what? The Ulta beta 3 by 4, right? You see, shorter, common sense to remember it, you see it shorter. Apparent height is smaller, refractive index, refractive index, refractive index, refractive index, refraction, refraction, okay? Please someone tell Tavishi the code, thank you, thank you very much, thank you very much, thank you very much. Sure. I got answer as 14, how come Gupta, just state your calculation here, my calculation is better, okay? Yeah, yeah, yeah, yeah, yeah, yeah, 14 should be, sorry, sorry, sorry, 14 should be, okay, one second, 3 by 4 apparent height, what you want to see is 105 and what should be actual? So, 3, 3 is a, and 3, 5 is a, oh, 5 is a 20, oh, oh, oh, oh, oh, oh, oh, oh, oh, my mistake, my mistake, my mistake, one second we'll correct it, less than a minute it will take and I will correct it, it should go on none of these because the right answer is 14, good. Thank you very much, thank you very much, thank you very much, okay, okay, okay, okay, okay, okay, okay, okay, okay, okay, okay, okay. So, thank you very much guys, thank you very much. At times calculation is safe, may God bless me that should not be repeated. Now, Vaishnav, R. N, Pranav and Aniket Gupta, good, good, good, good, good, sorry for that calculation mistake at the very beginning and here we are proceeding toward next question, okay, the velocity of light in diamond per second is at least, yeah, yeah, yeah, but just unit per game is there, centimeter per second, centimeter per second and the mistake while writing the options is I did not even try to confuse all the options are directly telling you the right answer, right? You don't even have to look at the units, right? Yes, there would have been a 10 to the power 8, 10 to the power 10 and 10 to the power 12, like now, 2 less than 8 and 2 more than 8, so 10 to the power 10 and 10 to the power 6, then it would have been a beautiful question, right? Good, good, good, good, good, good, 59 people have responded last 20 seconds to remain, like still remaining, not everyone has responded yet, okay? So we have more than 59 people, that would have been like bars, right? High rises, 60 people is everyone voted and 13, 10, beta, guys, please, there wasn't any scope of confusion, there wasn't any single scope of confusion, 2 divided, 3 divided by 2 is 1.5, the answer, right? Everyone, everyone, everyone, everyone, okay, good. Let's look at the leaderboard because now from 4 to 32 people, it's going to be a good up and down, Gupta, Aryan, Vaishnav did not respond to this question, Aryan Tandon is leading the scenarios, very good, very good, very good, Aryan Rao was the fastest one to respond to this, good, good, good, good, good, sorry, I got that beautiful joke of yours, concentrate on the next question, a rectangular tank of depth 8 meter is full of water, the bottom be seen at the depth of, no doubt, no doubt now, no doubt now, no doubt, you know this, yes, exactly, see the questions around optics, okay, the chapter like light reflection, and refraction, until unless that they buy themselves twisted and stated 1.333 and all that, will hardly need calculation, and I repeat it again, again, there are only 2 chapters from which you are going to face numerical in your 10th exam, which are electricity and light reflection and refraction, okay, the 2 chapters, from magnetic effects of electrical and you are not going to face any numerical, there is the next chapter is of English, which is sources of energy, so you are obviously not going to receive numerical from there, so it counts to 1 by 100th of the fraction of the second, right, that's good, I wasn't aware it counts till that extent, like literally like 1 by 100th part of the second, oh good, 1 by 1000, I say who are they, 3 digit or 2 digit, there were 2 0s and 5 or 1 0 and 5, 3, okay, oh 41 people got it right, please put it over mute guys, dear friend, please, okay, so now it's 1 by 1000th part, good, good, good, good, 41 people got it right, pretty obvious, 8, 4, 3, same thing, 3 by 4, apparent height upon actual height is equal to 3 by 4, 4, 2s are 8, 6, gone, what are terms, good, good, good, good, good, no doubt, very easy going, can we proceed to the next one, are for ready, before that the leader board, good, good, good, good, so let's see who responded to this, the fastest one, 945, 957 by Tandon, Anike Gupta fastest, very good, very good, very good, very good, very good, very good, here we go to the next question, the time taken by sunlight to cross a 5 millimeter thick glass plate, whose refractive index is given, now that's beautiful, Surya might be liking the question, yes Surya, so Surya are you expecting graphs, by mistake if anyone has forgotten the formula, speed is equal to distance upon time, okay, such a huge help from my side, you know I love you a lot, Surya no that's not healthy dear, Gupta that might be sarcastic right, Gupta, okay, like you guys, the time taken by sunlight to cross a 5 millimeter thick glass slab, 10 times up, 2 high rises of 21 and 22 people answering, 10 and 5, good, look here, by speed is equals to distance upon time, you have to first calculate the speed of light in this scenario, which will be equal to distance upon time, so time is equals to distance upon speed, can I write it like this, yes or no, yes or no, yes or no, yes or no, and you have your answer, why do I feel something is wrong here, we will see again, millimeter, if it was a centimeter then this would have been possible, this is a millimeter, right, yes this is a millimeter, we will have to catch this, okay, so anyway, good, good, good, good, so the answer should be a, right, answer is a, right, one second, answer is a, 0.25 into 10 to the power minus 10, now there is a scope of getting confused, right, so it is coming out to be 2.5 into 10 to the power minus 11 or 0.25 into 10 to the power minus 10, good, good, good, meter per second, yeah, alpha being the right answer, Santosh, you haven't been, Santosh is a bro, he creates all these papers and questions and all that, he creates the digital content, okay, okay, okay, so this a is the answer, okay, so, good, good, good, and here we go to the leader board, so how many of you who are from that 22 column did how I did, 2.5, correct, Gupta is now leading the scenarios, our intendant is also there, a good hustle of odd 100 plus point difference, Nana was the fastest one to respond, very good Nana, and here we go to the next question, like there is a facility in mentee to give background music as well, filled with liquid appears slightly raised because of, yeah please, less than 2 seconds please, now you can't do it, you have to, like while creating that, while creating only that is allowed, it has to be done at the first slide, so even if I want like as I corrected the options, I can't do it like wise, so 100 seconds is required because people are not still answering, I kept 100 seconds because anyway if everyone will respond it will close by itself, so 53 people have responded, we are odd 60 people, there are people who haven't responded yet, geography teacher, okay, it's good, no it's good and healthy, right, geography is anyway boring, so like she'll have to entertain herself, Aniket is that a very big doubt, like a very big doubt, I'm not giving me, I read it, it took some 5 seconds for me to realize what this man is trying to suggest, so 48 people got it right, guys it is about refraction, not reflection, okay, good, good, good, Aryan is there, Aniket is there, who's the fastest one, Aryan was the fastest one to respond to this, very good Aryan, very good, very good very good my dear friend, here we go to the next question, for total internal reflection to take place, the angle of incidence and the refractive index of the medium must satisfy the quality, the inequality, to my dear friends of CHK I guess we'll have to discuss this, good, good, good, good, good, good, but at 7.23 I realized I read this question, I wanted to put it back, I did not have time to do that, really sorry for this, to CHK, I'm really sorry, yeah that's beautiful then, once your timing was 12.30 seconds, good, good, good, good, very good, excellent, but that zero is not healthy now over there, you won't learn that in bio only, you guys are, 18 people only got it right, now this needs a help, this is done refraction, not this one, this is a medium, the primary quality required for passage of like, for the happening of TIR, total internal reflection is, the night should travel from a denser to a rarer medium, now suppose the light is incidental, this is the normal, then post refraction, it will go like this, yes, away from the normal, yeah, if you'll increase the angle, it will come a point when you will incidental light and it will be on the surface, this is the verge of TIR, okay, if you'll check this scenario, then you surely have some angle of incidence, but your angle of refraction is 90, clear, so sin i upon sin 90, yes or no, clear, fine, okay, the refractive index, this will be the refractive index of this media, so what will be the refractive index of this, 1 by refractive index of denser media, okay, sin 90 is 1, so for TIR to happen the refractive index minimum should be equal to 1 upon sin i or to experience it coming back, clear, so fine, should be greater than sin, okay, or the other way, sin i should be greater than 1 upon refractive index, gi, everyone got it, everyone got it, everyone got it, again, Rn, Rn, I'll repeat it, don't worry, Rn, this is the scenario, this is the refractive surface, okay, the surface where refraction is happening, here it's a denser media, here it's a rarer media, light is being incidented, this is a normal, okay, it will be refractive like this, angle of incidence, angle of refraction, if I keep on increasing this angle, there is a positive possibility that the light will be refracted to this level, yes or no, and if so happens, this is angle of incidence and this is angle of refraction, by that calculation you will get that sin of angle of incidence is equal to 1 upon refractive index of the denser media, clear, sure, now, that tells you that for making it happen, it should be greater, okay, good, very good, very good, very good guys, good, so 18 people got it right, we will be observing a good shuffle, if the people who answered it, Rn tendon missed it, okay, Rn, no problem dear, you are playing good, well, I don't know the sign is the fastest one to respond, good, very good, very good, very good, you understand in equations, very good, here we go to the next question, 7 questions, 7 questions, the reason of shining of air bubble in water is same thing, you guys know it, now you guys, everyone knows it, the reason behind mirage, the reason behind optical fibre working, okay, sure, the reason behind shining of bubble, all are same, what is the reason, shining, shining ka reason is same, shining of diamond, shining, shining of diamond, that word mirage was the hint, right, now I waited for quite a good 10 seconds, no beta, see, shining different category of optical phenomena, splitting of light that is rainbow and other things is a different category of optical phenomena, okay, clear, spreading of light is a different category of optical phenomena, spreading in technical term is called scattering, so, scattering, splitting and shining, there are 3 optical phenomena associated with all these 3 things, 56 people have responded, very good, I made mistake, sir, what is a diffraction, okay, diffraction, word meaning beta, 33 people got it right, pretty obvious, right, total internal reflection of light, next question, ready, one, two and before that the leader board, so now we might be having a shuffle, is it, is it, is it possible, the fastest one was khushi, very good khushi, show too how shuffle happened, next question, white light is passed through a prism, this colour shows minimum deviation, minimum deviation, now think, think about Vibhgyour, Vibhgyour, Vibhgyour, Vibhgyour, no wavelength is there, as a kid you know which one is having least, how green will it be, how green will it be, think, we will make a picture, everyone please respond, we will save some 30 seconds, time is up, I guess 3 people left, they have kept their phone like that, marking their present, 38 people got it right, why they got it right, because when this happened they thought about here what is coming out of a prism, is it Vibhgyour or is it Vibhgyour, tell me, A or B, so the violet will have the maximum deviation, the red will have the least, okay, easy, easy, easy, easy, easy, now you will remember for life if not yet, easy, nowhere, like let it be wavelength and frequency, yes, surely Nikola Tesla said, if you want to understand the universe, discuss in terms of energy and frequency, okay, but yes, here we can ignore it because that is easy to understand in general terms as well, right, am I right with the name Nikola Tesla, was that the person who said this statement I stated, no, but Einstein did not work in the line of frequency, he worked in the line of energy and speed, yes, very good, very good, very good, very good, very good, come on, need a board, suppose the shuffles are happening at down, R&R was the fastest one to respond, very good R&, very good, here we go to the next question, which of the following colors suffer, I made a mistake, I am telling it tomorrow, like day after tomorrow, scam on is also going to be the same, which of the following colors suffer maximum deviation, not minimum, the previous one was minimum, this is maximum, you know the difference now and the answer also, now for pretty obvious reason violet should be there, but if violet is not there then blue or indigo, right, if you guys know what Vibgur is, Vibgur is violet indigo blue, green, yellow, orange, red, right, please note it down, if 53 people had already responded when I stated this, yes Nandini, 45 people got it right because they are awake, all this 8, 3 and 2 people are Aniket Mungaras, okay, here we go to the next question, Mungara like if situations will go like normal, I will come sit with you at your system, I am so curious about it, yeah, leaderboard, I hope I have already explained the answer, no, no, no, no, Denso might cause some wear and tear, Ananya was the fastest, Disha was also the fastest, Gupta is consistently maintaining its position at the top, Gupta, don't mess up at the last one or two questions, okay, yeah, check here, mobile should be charged, come out of the house if the internet is not coming inside the house if you are using mobile data, okay, chalo, next question, now this I will have to explain, read this, then you might get or might not get relaxed, it's about trigonometry actually and the rate diagram of a glass slab, clues will be like trigonometry, I told you apply trigonometry, draw the rate diagram of a glass slab and apply trigonometry, shift means variation from the path, very good Disha, no problem, the lateral variation from the path of the light is called lateral shift, no, there wasn't any requirement to guess but okay, Ananya, good, the only problem while sitting in office is if your water is over you will have to go and buy it, okay, then no problem, Ananya, very good, very good, very good, relax, distance between the incident and emergent ray, that's pretty typical, let's come here, see guys, I'll draw it, okay, first of first, relax, understand for very few such questions I had kept, for also less number of questions and a big number, like a huge amount of time, thinking, incident ray, no doubt, normal, no doubt, refracted ray, no doubt, and then the ray coming out, yes or no, sure, now which is, if you will extend this ray, okay, and if you will extend with this ray, you will understand that the ray actually wanted to go here, but it has landed up here, so this distance is called lateral shift, G, I got it, what our dear friend said, the distance between incident radiation and refracted radiation, like emerging out, okay, diagram clear, now you want to use your trigonometry now and calculate or you want t for time or e for explanation, I'll explain straight away, if you need time, you can use time, explain, very good, very good, but can I draw this over here as straight, very good, now, a 4 by root 3 centimeter wide glass, so this is 4 by 4 root 3, sure, refractive index is root 3, okay, is incidented by a light at 60 degree, okay, so sine 60 upon sine r is equal to root 3, we need r, because that is what is going to help us, right, from here we got root 3 by 2, 1 by 2, right or not, clear, r is equals to 30 degree, y or n, y or n, y or n, very good, relax, see r is this, this brown, inside the brown is r, normal is yellow, r is this, this was 60, so will it not be 60 minus 30, which is 30, it's okay, I did not want to use 30 directly so that I don't confuse you with whether I have used r only, okay, got it, now, but just this is 30, this is 4 by root 3, yellow is also 4 root 3, so the brown line, the brown line, brown line is hypotenuse, okay, cos 30 degree is equal to thickness which is 4 root 3 by brown line, right, yes or no, my internet lagged and I couldn't hear your voice, okay, I did that, relax, no problem, no problem, no problem, no problem, no, no, we will explain by diagram on little else, slab, incidented ray, normal refracted ray and the ray emerging out, if you will extend the emerging out ray and the refracted ray, you will see there is a difference between them, this difference is called lateral shift, got it my dear friend Aditya, now, in order to calculate this lateral shift, you will have to apply trigonometry, okay, 90 degree angle you are seeing, you can see that the thickness of this slab is 4 root 3, you know that psi in i which is 60 degree by psi in r which is unknown is equal to refractive index, so from here you got a refraction angle as 30 degree and you have refraction angle, you know that the remaining, this is the angle of refraction, okay, clear, is 60 minus 30, clear, okay, now, in the right angle triangle Chota Wala, cos 30 degree is equal to adjacent which is thickness of the slab 4 root 3 given upon hypotenuse which is the brown line, clear, yes or no, yes or no, yes or no, cos 30 degree is root 3 by 2, so you got brown line is equal to 2, yes or no, brown line is equal to 2, yes or no, clear, fine, now, brown line is 2, this angle is 30, in this right angle triangle you have to calculate green dash, so sin 30 is equal to the lateral shift divided by hypotenuse, one should be the answer, okay, brown line be 8, have I made any mistake, brown line be 8, have I 1 by 2, oops, oops, oops, oops, oops, oops, oops, oops, oops, oops, oops, oops, oops, oops, oops, oops, oops, oops. Oops, brown line be 8, brown line be 8, okay, sure, so this is 8, this is going to be 1 by 2, 2 and 8 got cancelled, 4 is equal to lateral shift, now, for you guys, understand, every time you don't have to do this okay look here lateral shift is equal to the thickness multiplied with cosine of r sine of angle of incidence minus the R quickly note this down formula down quickly note this formula down so you will have lateral shift in this case is equals to 4 root 3 sine 30 cos 30 got it gi got it the formula formula formula is important got it guys got it got it got it good good good good good good so relax can we proceed kept the same question beta you can apply the formula and get the answer okay oops formula again formula is please note down lateral shift is equal to thickness of the slab or media multiplied by sine of angle of incidence minus refraction upon cos of angle of refraction okay better for some very obvious reasons I have kept this come on today okay niche not a long formula you can also remember it the other way not lateral shift by thickness is equals to right yeah job but good good good leaderboard though the leaderboard of this question doesn't matter a lot but good good good good some people have guess calculated some use estimation and some even calculated like a stretch I was the fastest one to respond very good a switch I'm very good big and here we go to the next question apply the same get the answer so that's a hum again so that's a twisted so that's a twisted refractive index of a rectangular glass slab is given our light ray incident at an angle of 60 degree given laterally displaced by 2.5 find the distance traveled by light in the slab so you have to calculate the brown line right or not I stated sorry sorry sorry sorry sorry sorry sorry if you can imagine that then I have told the answer sorry I shouldn't have let's finish this on time guys I don't think so it will be possible because only three minutes are there that means 90s like 180 second we will need we'll have 90 plus 90 cut two questions but there are 100 plus 100 cut two questions right jackfruit raw or right raw I like in northern part of the nation no better raw is cooked cooked in northern part of the nation as a dish as a fried dish so it's 29 people got it right 29 people got it right 29 people got it right okay explanation here relax same thing but other scenarios will be same are we having a diagram please are we having a diagram yes the distance which the light travels in the slab is the brown line okay sure fine this is 2.5 this is 30 so this is going to be the five got it everyone got it GI got it 29 people got it right and here we go to the leaderboard so Aniket is still leading the show good abhi 200 point the difference is there between Nana and Aniket here we go to the next question Nana you're going to do that because I know Abhi Aniket kha phone karabho jaay guy not and we are two square plates of same matter and same thickness but the length of B is twice that of a ratio of resistance of a and B is it doesn't switch up from optics to light a giga gya how long it took for you guys to remember that R is equals to Roel by a five second of mungara like Gupta you might have lost it 200 point that gap was there between you and I forgot the name of this went it's embarrassing for me now sorry Nana not Naima Naima Nana Nana was there in the name Naima there's a girl named Naomi not Naima Naima I guess sorry I might be wrong 21 that's beautiful yeah 11 11 11 21 relax relax look at it and we are two square plates of same matter and same thickness okay so the thickness is same length of B is twice that of a ratio of resistance of a and B ratio of resistance of a and B the ratio of resistance anish what happened what happened the kusto why why it has to be one is to two right so it is one is to two now let me check he ola like them a and B are two square plates congratulations of same metal okay same thickness okay thickness is same okay thickness is same this is a thickness okay so but length of B is twice that of a this is to L this is L B okay ratio of the resistance so R of a is equals to Roe length by area thickness into length okay R of B is equals to Roe length into thickness by area mm-hmm guys RA and RB are equal one is to one got it look at this line white color line can you see that is showing you which is the direction of measurement okay so your length is along this R is equals to Roe L by a is going this way the current is flowing this way okay now look from here beta that area of this cross section this cross section is thickness multiplied by this which is L the area of this cross section is thickness same thickness multiplied by 12 got it that's what that is what the beautifulness of the question for a square plate beta L B NH L NH are same I repeat Gupta big first of all this white light is telling you okay this is the direction of flow so R is equals to Roe L L is this way this is to L for B R is equal to Roe L for a okay now area of cross section is this area of cross section is this what is this area this is thickness multiplied by this L what is this area thickness thickness is same multiplied by 2 L okay so R and R got cancelled like everything got cancelled 2 2 got cancelled LT LT L RB by RA is 1 is to 1 got it got it everyone honestly state got it satisfied okay Gupta what happened tell me if we have facility for drawing a cubic it is given that these are the same thickness as a point any point okay thickness this is the thickness yes or no okay next this is 2 L and this is L okay and as they are a square plate so this will also become 2 L and this will also become L yes or no I'll be looking from here if this is a wire the cross section is here Hakiné and again and everyone what is the cross section of this T into L okay what is the cross section of this it is T into 2 L okay what is the length for which the current has to flow L here what is the length for which the current has to flow 2 L now 2 and 2 got cancelled its resistance is also 1 by thickness its resistance is also 1 by thickness okay 1 is to 1 got it as this is like a cha now I got it good good are we satisfied satisfied these are their square sides okay 11 people got it thank you Surya Nana good good good Eden good good good and Gupta good good good here we go wrong time for asking this you can also insert emojis how is fun taking the spotlight I don't know but I guess there is some algorithm they have like I always seen these kind of word informative fun knowledgeable okay good these these are what they all generally take good pressure no problem job can we proceed to the next question and it is another question at the wrong time what Anushka should I have if I'll put that I don't know then 100% it will get no so your statement should be like Eden why are there only four people from 0 to 40 is it like what you are asking it in oh bad Eden you had a good lockdown huh sure here we go to the real question the last question okay in the circuit shown the reading of a meter when switch S is open and then switch S closed because all those options are different or any any of the way you have to calculate only one dealing with optics landing you in electricity is like right but that's gonna be same in come on tomorrow okay not tomorrow day after tomorrow many of you might be just going to thrash me in the chat sir tomorrow day tomorrow can say for CHK refraction is not there questions are simple asha simple very simple simple and beautiful questions for you da for me is like everything is hard yeah yeah last time we see what I forgot to mark or something we can we can correct you how pilot explanation pilot explanation pilot explanation explanation explanation explanation explanation let's close calculate if I close if it is close this is going to be one three plus one four four by twenty five easy bravo good good good good good good relax let's see that Nana congratulations my dear friend Nana good good good very good very good well played Nana very good very good very good very good very good excellent good good good can you send the questions on most of it I generally do I'll just do it now as well okay thank you very much thank you very much thank you bye bye guys bye