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Parabola Exercise 11.2 Chapter 11 Conic Sections Class 11 Maths

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Published on Dec 1, 2018

00:00:10 Real life examples of parabola
00:04:32 Standard forms of Parabola
00:06:32 Definition and geometric proof for parabola
00:13:32 Derivation for equation of parabola
00:24:42 Way to remember all rules of parabolas
00:35:02 Derivation for length of latus rectum of parabola
00:40:02 NCERT Solutions Exercise 11.2 Q1, Q2, Q3, Q4, Q5, Q6
In each of the following Exercises 1 to 6, find the coordinates of the focus, axis of the parabola, the equation of the directrix and the length of the latus rectum.
00:48:46 NCERT Solutions Exercise 11.2 Q7, Q8, Q9, Q10
In each of the Exercises 7 to 12, find the equation of the parabola that satisfies the given conditions:
00:52:21 NCERT Solutions Exercise 11.2 QUESTION 11
Vertex (0,0) passing through (2,3) and axis is along x-axis.
00:55:01 NCERT Solutions Exercise 11.2 Question 12
Vertex (0,0), passing through (5,2) and symmetric with respect to y-axis.
00:57:21 Chapter 11 Miscellaneous Exercise Question 1
If a parabolic reflector is 20 cm in diameter and 5 cm deep, find the focus.
01:04:31 Chapter 11 Miscellaneous Exercise Question 2
An arch is in the form of a parabola with its axis vertical. The arch is 10 m high and 5 m wide at the base. How wide is it 2 m from the vertex of the parabola?
01:13:41 Chapter 11 Miscellaneous Exercise Question 3
The cable of a uniformly loaded suspension bridge hangs in the form of a parabola. The roadway which is horizontal and 100 m long is supported by vertical wires attached to the cable, the longest wire being 30 m and the shortest being 6 m. Find the length of a supporting wire attached to the roadway 18 m from the middle. WEBSITE - https://www.ashishkumarletslearn.com/

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