Question

A particle is moving with constant speed in a circular path. When the particle turns by an angle 90°, the ratio of instantaneous velocity to its average velocity is π : x√2. The value of x will be 

(1) 2 

(2) 5 

(3) 1 

(4) 7

Answer 1

Correct option is (1) 2 

Let instantaneous velocity be v. time,