Question

Assertion : Value of radius of gyration of a body depends on axis of rotation.

Reason : Radius of gyration is root mean square distance of particle of the body from the axis of rotation.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

Correct option (a) Both A and R are true and R is the correct explanation of A

Explanation :

Radius of gyration of a body about a given axis is equal to

It thus depends upon shape and size of the body, position and configuration of the axis of rotation and also on distribution of mass of body w.r.t. the axis of rotation.