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JEE Advanced Level Test: Tangent and Normal- 2 - JEE MCQ


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9 Questions MCQ Test - JEE Advanced Level Test: Tangent and Normal- 2

JEE Advanced Level Test: Tangent and Normal- 2 for JEE 2024 is part of JEE preparation. The JEE Advanced Level Test: Tangent and Normal- 2 questions and answers have been prepared according to the JEE exam syllabus.The JEE Advanced Level Test: Tangent and Normal- 2 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for JEE Advanced Level Test: Tangent and Normal- 2 below.
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JEE Advanced Level Test: Tangent and Normal- 2 - Question 1

The x–intercept of the tangent at any arbitrary point of the curve  is proportional to

JEE Advanced Level Test: Tangent and Normal- 2 - Question 2

The line  = 1 touches the curve y = be–x/a at the point

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JEE Advanced Level Test: Tangent and Normal- 2 - Question 3

If the subnormal at any point on y = a1 – n xn is of constant length, then the value of n is

JEE Advanced Level Test: Tangent and Normal- 2 - Question 4

If the tangent at P of the curve y2 = x3 intersects the curve again at Q and the straight lines OP, OQ make angles a, b with the x–axis, where `O' is the origin, then tan a/tan b has the value equal to

JEE Advanced Level Test: Tangent and Normal- 2 - Question 5

The length of the normal to the curve x = a(q + sin q), y = a (1 – cos q), at q = is

JEE Advanced Level Test: Tangent and Normal- 2 - Question 6

 The beds of two rivers (within a certain region) are a parabola y = x2 and a straight line y = x – 2. These rivers are to be connected by a straight canal. The co-ordinates of the ends of the shortest canal can be

JEE Advanced Level Test: Tangent and Normal- 2 - Question 7

If the area of the triangle included between the axes and any tangent to the curve xn y = an is constant, then n is equal to

JEE Advanced Level Test: Tangent and Normal- 2 - Question 8

At (0, 0), the curve y2 = x3 + x2

JEE Advanced Level Test: Tangent and Normal- 2 - Question 9

For the curve x = t2 – 1, y = t2 – t, the tangent line is perpendicular to x-axis where

Detailed Solution for JEE Advanced Level Test: Tangent and Normal- 2 - Question 9

Given curve is x = t− 1,y = t− t
Derivating w.r.to t we get
d x/ dt =2t -------(1)
and  dy / dt = 2t − 1 -------(2)
dividing (2) by (1)  we get
dy / dx = (2t − 1) / 2t
Therefore, the slope of the tangent is  (2t − 1) / 2t
Given that the tangent is perpendicular to x-axis. Therefore, tangent is parallel to y-axis. 
We know that slope of y-axis is infinity and the slopes of the two parallel lines are equal.
Therefore, slope of the tangent is infinity.
Hence, (2t − 1) / 2t = 1/0
⟹ 2t = 0
⟹ t = 0

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