JEE Main 2020 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 6 September 2020, Shift 2, Physics Q2

Question 2 of 75 in this shift, Physics question 2 of 25.

When a car is at rest, its driver sees rain drops falling on it vertically. When driving the car with speed

v

, he sees that rain drops are coming at an angle

60^\circ

from the horizontal. On further increasing the speed of the car to

(1+\beta)v

, this angle changes to

45^\circ

. The value of

\beta

is close to :

(1)0.41
(2)0.50
(3)0.37
(4)0.73Official answer

Official answer

Option 4

NTA final key (Sep 2020).

Chapter: Motion in a Plane
Topic: Relative Velocity
Idea tested: Rain Angle Shift with Observer Acceleration

Same topic in other shifts

All Relative Velocity questions

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.