 clear what's the time for each question it varies from question to question dear so in general it is from 50 to 75 seconds there are conceptual questions as well which are conceptual question or theory questions and numerical dominantly numerical so 50 plus people very good very good very good let's start one and two and here we go question number one you have to answer in grams per cubic centimeter because there is what we call it as remember the glitch when you skipped question and got full points yeah I do remember but that's why we do not have what we call it as timer so if you will skip question you won't get anything so 38 39 40 41 42 43 people have responded I show a shake or show a show a show a show so for those who are new please do not be worried about this no correct answer ok please I'll correct it post explaining it so so guys this was the question a small bottle weighs 20 gram when empty clear so mass of bottle is equal to 20 grams so and 22 grams when filled with water yes or no clear so mass of water which went inside the water was 2 gram yes or no so you know that density of water is 1 gram per cubic centimeter I don't know clear this implies that this implies that the volume of bottle is 2 cubic centimeters yes or no good now the question is when it is filled with oil it weighs 21.76 so mass of oil is 1.76 clear so density of oil will be equal to mass upon volume clear so which is 0.88 gram per cubic centimeter ok then you have to say that relative density is equal to density of the density of oil divided by density of water so relative density is a different term ok of any matter m is nothing but density of the matter by density of water ok clear so now everybody see as I have already given unit I will consider this ok per meter cube I will not ok so here we go per meter cube I will not because I had given clear instructions excuse me sir yes bache somebody had written 10.8 and according to the question inside it it didn't specify whether it was referring to the oil or 2D oil plus the glass so better see as per the pattern of the question there are two things involved when a bottle is panned with oil there is and the two things are invisible the bottle is not visible the material of the bottle is not visible with what we call it as the material of hence when it states it means that it is talking about the quality of oil got it and the density of the oil is the correct word directly here ok good no problem so let's fill up the scenario Tushar sir please Tushar bhai how can he be here he's not free now ok he's here good good guys so no one guessed it right wow that's good like at least for me it is satisfactory no one guessed it right guessed it wrong is a good hint for you please stop guessing I didn't read the question properly just to spite you just to spite you one person is going to put it guessed it right repeat just to spite you probably one person is going to put it as guessed it right no I guess by now everyone responded we are 52 right I know what one person who one person can be I know this I was aware about it good so wrong concept applied okay anyone who applied the wrong concept can you please unmute and speak a bit of please please please do not get embarrassed for out of it if you can find if you do not want to it's okay I'll just wait for five seconds anyone who has marked that wrong concept applied what was that wrong concept let us understand the misconception lying behind the question no problem if you do not want to speak up couldn't complete in time very good chalo fine careless mistake did not get the question did not even understood the question okay how many of you just over the chat write me okay forgot that you have to use that the density of water is one gram per cubic centimeter but good very good Sanjitha hmm right so be careful on those friends dear yeah first of all you will create a void when you will do that the two gram water was filled so by that you you need to know the volume now if volume is not directly given you have to take it from some other parallel knowledge of yours okay sure and that point you have to apply instantly you do not apply that what is the volume of the water our density of the water rather sorry so good it's okay it's good to know that where we are wrong by when I am ready to depart from house it is good to know that mirror forming takes a new way mirror tie or Mirabelle a leg will be free to show me jara right that helps me to harvest myself right chat good next question ready everyone here we go a body of mass 50 kg has momentum of 3000 kg meter per second then it's kinetic energy is I have to resist myself reading the question I know it distracts a bit when I read it slow actually okay so I will stop I will not read it from next question no chatting meanwhile others are solving yes now what happened beta Vaishnavi unit will come out as SI all things are in SI to unit will by default come out in June do the calculation when Vaishnavi said no oh no I can't remember any problem I just remember that meme oh no no no no no no no no so much of energy 20,000 right let's see that's too much of energy let's see it maybe it's okay so let's solve it out but there are two formulae here one is a standard formula half mv square right for that you have to first divide momentum by mass because momentum is mv if you divide it by mass you will get the velocity output you put it here and square it but you know that we have also discussed with this very critical form formula and always every year one mandatory question from here it is right that kinetic energy can also be represented in the form of potential energy as half p square by m anyone having any doubt in this right away right now and the for no doubt never knew that now now I'll prove it also for you today we have used a lot I remember one day I conducted a quiz where this formula I made you all to utilize at least five seven times no problem relax now you understand that please better half mv square is there now if I multiplied and divide by m the numerator looks like half moniesha square by wrong absolutely wrong by m so bad bad joke but just cave in mind just spontaneously in mathematics you can use my name AP okay when you reach to that chapter I'll ensure that I teach that chapter or at least conduct the sentiment of it so that mv gets a good chance to balance it out right good so mv square mv has a lot of momentum sir if you will listen to her words or expressions you will understand it sir I have a question yesterday sir can't you just say momentum is equal to mass into velocity and find the velocity and substitute in half mv square that's what we I stated as the first thing right here yes okay we'll divide the momentum by mass and all but see you do all this practice and you just directly put the value here you will get half of 3000 square is 3 into 3 into 10 to the power 6 by 50 yes or no 50 is 100 making it 10 to the power 6 to 10 to the power 4 9 into 10 to the power 4 so 90,000 joule by default right everyone so now let's speed up okay everyone got it gee I got it sir in an actual NTSC exam they'll give more time right no they will get lesser time they will give you 30 seconds for each physics question sir but then there won't be that bad moving like that no just kidding so understand here understand there are 100 questions okay of mat mat okay mental ability test which is also general mental ability and then 100 questions of sad scholastic aptitude test okay in that mathematics will really eat a lot of your time that's why we practice okay literally mathematics will eat a lot of your time because there will be say for example a surface area and volume the good question came but you cannot remember the answer now you can remember the pi r square h 4 by 3 pi r cube things etc you will have to do our cube and may God not bless you with numbers like 13 the cube and all right yes sir so in that case keep we practice to keep a good to keep a good time reserved for mathematics okay leaderboard please so may God not give you that scenario you will have to do 37 cube think about it sir is there no fastest finger first any question there will be better randomly okay what I have done is those which are numerical okay I have given you enough time to solve and respond clear sir one second sir can you go back you didn't correct my answer sir sir it says I mean third place even though I have zero points it's 90,000 with the comma and like there's no space between the thing and which which 90,000 am I missing I'm not missing a so then this is also there so that's case you meet us for second square this unit is wrong but I'll give it as of now okay I do understand the pain of the student so do not want to ruin your habit but okay I also love you now that's the wrong part at me good so now Pooja good please respond please respond for those there are many 1500 7,000,000 and something something so I know that you guys are here here so hmm good good good good good fine very good we are slowly slowly going to reduce the time given to you okay sure because we are literally investing a lot of time as of now on numericals to be solved quickly two blocks of mass 8 kg and 12 kg connected at two ends of an inextensible strength I'll not read the question sorry okay sir a low problem I'm going to explain but I do not worry no problem can I visit that Vaishnavi to see a nine one special lecture I had to take in absence of Rohit that was my first lecture to see a nine okay I'm doing it no problem no problem let's learn those things again tension was something okay after vector which gave a lot of tension to people I remember it right this belong to that that line show show quickly let's let's let's quickly go through it so dear if you look at the story there is an 8 kg and 12 kg mass they are tied to two ends of a string and this string passes over a pulley right show so systematically if I draw it will look like this is the pulley this is a string this is 12 and this is 8 am I clear show Cyril now Vaishnavi now you got by image good now Cyril beta this is being pulled by the gravity by 12g am I right mg this is being pulled by the same gravity 8g now imagine are they in same direction or in opposite direction sir opposite direction opposite why because if you imagine and stretch this spring then 12 is going here and 8 is going here right sure yes sir they are opposite so the net force effective is 12g minus 8g which is equal to 4g right you know that acceleration is total force upon total mass total force is 4g total mass is 8 plus 12 20 so we will get g by 5 everyone gi got it show good very good very good very good Cyril my dear friend understood very good very good dear very good sharp leaderboard and then responses okay quickly fill the questions of loss mark analysis that will help both come number of question people over the leaderboard quickly quickly quickly I will not wait here for more than 10 seconds please good good sure next question a vehicle starting from rest attains a speed of 72 km no I am not going to read it sorry bad habits go away with lot of difficulty sorry thank you NSB MV when you complain it's still 20 seconds and more than that were remaining very good Vasudev 1000 1 kilo Newton okay very good the answer is W on this fully earth so quickly for everyone so why is it starting from rest so there is a background story of it some other day we will sit down and discuss that okay u equal to 0 v equal to 72 km per hour you can easily convert it to meter per second what you will have to do is multiplied by 5 by 18 18 goes to 5 so it becomes 20 meter per second right sure fine in that duration the s is 100 meters so in order to know the force you need mass which is given you need acceleration which is not given you can fetch s v u and a out of the three equation in the third one so you will go like okay v square is equal to u square plus 2 a s so a is equal to nothing but 2 put it over here you will get f is equal to 1000 Newton 1 kilo Newton and like that everyone got it very very very good see guys these are legit NTS question like legit directly picked from the paper ghost got vanished sure please they are exactly handpicked from NTSC papers so this is fairly enough to enhance your confidence or to alter it any other way as well how many are feeling negative or what we call it as depreciation in their confidence post looking at these questions no you guys consider them hard pure NTSC is a very big over and all nothing it's easy and these are see there are friends who have already spent time with me at least me in 9th grade and they know that these are the bacha questions what we have actually done in class these are literally bacha questions in comparison yes and we for other that option will know will be known as long we have a reason not fitting options we can write reason ok fine so everyone here is the leader board good throw at the leading scenarios now very good next question before that your LMA responses please it's not me you guys I have been talking ok very good this time you guys were quick in filling up the responses next question quickly let's speed up answer fast to get more point when the velocity of a body is doubled it's kind of ok I am not supposed to read the question always I realize after reading the question is the same case with dieting and then I realize oh I don't want to eat its momentum is double right why there is a doubt right kinetic energy is proportional to velocity square if at all something will happen kinetic energy will become 4 times potential energy if kinetic energy has increased potential energy will have to decrease ok momentum is mass times velocity as the velocity will increase mass will not change so only momentum will change to double ok no explanation was required actually but no problem leader board please fill up what hang ok no problem no problem it will be activated in a while no not worry got it right by solving ok no problem sure next next next next next next next question this time I was able to control sorry NSV that ok ok ok other an expressible one I doubt that multiple choice selection and type like one type of option can come up I'll have to explore it no this wasn't fastest fingers first 900 150 what is this so can you explain I wasn't very clear on it no problem no problem story a man of mass 75 kg stands in a lift the force exerted on him by the floor when the lift start moving upward with an acceleration of 2 meter per second square is so suppose static condition yes or no in static condition the man ok is pushing the lift downward with 75 g as a response the lift is also giving it 75 g right or not every action will have an equal and opposite reaction right case number one case number two as the lift started going up so so in that case the total acceleration the system is given as two yes or no so you will be like force clear on man sure everyone ever lacking I have enough time to do it right now oh I saw as the got it sure so if you remember we have discussed it as the I stated it I got that there is no requirement of explanation right there very good so you guys know that when static acceleration is equal to G when going up acceleration is equal to G plus the acceleration going up and when going down acceleration is equal to G minus the acceleration of going down right so force will be equal to mass mass times 10 plus 2 everyone everyone everyone 12 5s are 60 12 7s are 84 and 6 90 dear you got it now once more please note down three points person standing on a floor three cases are possible the floor is static the floor is going up the floor is going down floor is static the acceleration effective is G floor is going up with an acceleration a the effective acceleration is G plus a floor is going down with an acceleration a the effective acceleration is G minus a got it so force in this case will be MG force in this case force in this case will be M of G minus A. Got it dear? As it states, clear? Moving upward this will be the applicable scenario, okay? And you know G is 10, clear? So 900 is the answer, 900, 150 is not the answer, 600 is not, 900 is the answer, 150 is not, 600 is not, 900 is the answer. 855 can be considered, I guess you have counted 9.8, I am taking it. So 90 KGF also. Repeat, for those who have written 900 KG force, yes we know that, 90 KG force means 900 Newton, very good. Okay, have I missed some ones? No, right? No, I have not. See if I check now, if I take it will become green, not white, okay? Good, good, good, good, good, good, good. Okay, who is venture? Can you please state your name my dear friend? Okay Harita, welcome, welcome, welcome to the leaderboard top ranking. Quickly guys, 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 times up for filling up the response. Sure, next question guys. This is cheating, this is cheating, this requires Prabhakar's lifetime aspiration with the centum R. Okay, it was late, it was late. That was this time. This is wrong. Guys, see these brackets are notifying all things, right? You just now know that kinetic energy which is being denoted by letter E over here is half P square by M. So 2 M goes here, 2 M E is equals to P square, hey, hey, hey, hey, hey. This was a good chance to do that. But please, please, please, please. See, legit question from NTSC exam, right? They have surely twisted a thola bot in order to create thola as a curiosity and probability of mistaken all. Very good throw. No problem Pratik, good. Quickly fill up all, everyone, everyone, everyone. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. Sir, do you get the names of the people who marked with just a very systematic analysis of it? Next question. Sir, do you use web scraping or something to get all the data? No, we can generate an Excel. Look at the question, it's a good one. Don't get horrified by looking at the value of G, it's just given in feets per second square instead of meter per second square. Therefore, your answer should also be in feets. I was late in giving the notification of not getting horrified. Was that the case, NHB? Sorry, sorry. What is BRB? Very good, 256 feet, 128, very good, very good, very good. Let's see. So, now guys, you know that a stone is allowed to fall freely downward initially at rest from the top of a tower. Okay, if the tower is height H, the time taken by the stone to reach the bottom of the tower is 4 seconds. So, you know, S is equals to UT plus half AT square, yes or no? 2 gates and or 2 16 rather 16 square is 256, very well known, I don't know. 256 feet is the height of the tower in feets. Sir, I didn't take it in feet, I took it in meters. It was given here, no? Sir, I didn't ask it wrong and I got 1056. So, is it given specifically that feet? Someone who wrote this either had a typing issue or knowingly had done it. Who is that? I'm giving you right because that's why I'm asking. Who is it? I want to give it right. Sir, if you are not telling, then I'll not. See, there is one more to 57. They are our friends. So, you haven't given correct for one. For? For mine, sir. I put 256. I'll just see. No, I'll not because at the instruction it is stated feet. Thank you. Many more such cases happens. People make mistakes under affection quickly. So, I have to add it now. Typing mistake. Mass 40 kg. Okay, I'm not supposed to read the question. One Pascal is SI unit, one Newton per meter square. Okay, so confusion between Charlie and Bravo. So, guys see 40 kg is the mass. So, force will be by 10. Upon area, area is 80 centimeter square will be 10 to the power minus 4 meter square. Typing mistake there. I got confused and left the question. Typing mistake there. Same, sir. Typing mistake. So, okay. Okay, it goes to. You are confused. Just delete it, sir. I guess we should go that way. So, then just mark all answers correctly. That is what is required. So, then that's not fair, sir. Yes, sir. You just leave the question, sir. Better to leave the question. Yes, sir. Well, because it's time, right? It's a good question, right? I'm on the scenario. Okay. So, no need to fill this up. Sir, I accidentally filled it up and then now I can't go to the next question. What kind of question is this? There is a misprint in NTSC's paper only. You have to click go to next slide. You have to refresh it. The distance traveled by sound in one second is called is the end of the question. Okay. Sir, none of the options are right, right? No. If you remove the object after the call, then you will get the right answer. That's why I had given less time for it. Velocity is the correct answer, beta. Sir, isn't it wavelength? No. Distance traveled by sound in one second is called. Sir, isn't it frequency? Distance traveled per second is called. Sir, distance traveled by sound in one second is not the same as distance traveled per second. If you guys remember, okay, this is denoted by lambda and in general we calculate that. Right? Sir, it's in one second. Yes, sir. It should be wavelength, right? See, if wavelength is not there, then the answer is the right answer. One second, guys. If wavelength is not there, then velocity is the right answer. One second. Ignore that this part is there, okay? Sir, what then can I write? Distance traveled by sound in one second is called by speed is equals to distance upon time. If time is one, that distance will be called as velocity, right? If wavelength would have been a word over there, then wavelength is the right answer. Okay? No, no, no. This won't be deleted. Okay, man. Why are you getting angry? Okay, okay, fine. Next question. So, we have fairly good time. Six minutes and three questions. Two minutes per question. Into a well. So, you can see hardly questions belong to gravitation and work power and energy. Mostly questions are from displacement and all that, right? The three equations of motion or f equal to mA type thing. Not even conceptual questions are coming. So, we'll quickly solve these. A stone is dropped into a well and the water is at the height 44.1. Clear? So, you're like time taken to reach is s is equals to ut0 dropped is the word. Half A is 9.8 and t square. Yes or no? Sure. Clear? So, t is equals to what? t equal to 3 because this is 4.9. 4.9 into 9 is this. t equal to 3. So, that mean the time taken by a sound to travel 44.1 meter upward, okay, is 0.13 seconds. Speed of sound is equals to 44.1 upon 0.13. Clear? So, 44.10 by 13. You can solve it and get done. Everyone got it? Sir, 3.39. Sir, 3.39. 3.39. Sir, I just recall the velocity of sound in air and wrote 3.34. No, so that is not the right case. Sure. They have given you information you have to give a based on that they could even alter it and the answer can come as something very different from it. Okay. Yes, sir. So, this is a person who was half way. Shuffle. Drove, you missed it. What? A bus of mass 2800 kg. I will not read the question. 21 people only. How come? Sir, we have to use two parts of work power energy for this, right? Not exactly required. You can go by V is equals to U plus 80. This information tells you that A is equal to negative 2. Am I right? Sure. V is equals to U. So, 90 into 5 by 18 is 25. U plus 80. Yes or no? Clear? Okay. Sorry, I did not read this. So, we will not go by V is equals to U plus 80. Rather S is equals to UT plus half 80 square. Okay. Sorry. Sorry, sir. Sir, we are in a third one. Third third. V square is equals to U square. 25 square is 625. Plus 2 is minus 2 and S is 100. Clear? So, 625 minus 400 is 225. So, V will be equal to 15. Okay. Even I am deadly. I have eaten kachori in the morning. So, I will not be able to eat anything else. I will have to work with juice. Sir, wait. Can you solve again? Okay. Solved. Clear everyone? Sir, wait. How is it? 625. Okay, fine. I got it. Okay. 25 square. Okay. 54 km per hour. Okay. One second. So, 15. Same. 18 by 5. 53 is 54. Okay. Just for others. Who is this? Sir, you have not corrected 54 on top. I did better. 54. 54. So, top top. No, you are correct. 15 meter per second. Yeah, I will. Okay. Normal force act. Normal force will not act along the direction of motion. Okay. Normal force acts perpendicular to the surface. Yes, sir. Okay. Congratulations. Last question, guys. Sorry for keeping you 5 minutes extra. But actually, we were very slow at the beginning. For theoretical questions like those which require time, I am going to reduce for 10 seconds. No question. No question. No answer. Nothing. Okay. That might be the last, what we call it as before the leaderboard by default, this gets created. Do not worry. Okay. Okay, guys. Thank you very much for your time. Very good. Very good. Very good. My dear friend venture, that is one second. Harita, right? I remember. Yes. Good. Good. Good. Thank you very much, guys. Thanks a lot. Have a good night. I hope that thola sa initiated the confidence that NPSC is not that difficult and you are not that bad in ninth grade knowledge as you think. Right? Thank you very much. Thanks a lot. Bye. Bye. Thank you, sir. Bye, bache. Take care. Bye. Thank you, sir. Bye.