question_answer

The moment of inertia of a solid sphere, about an axis parallel to its diameter and at a distance of x from it, is I(x). Which one of the graphs represents the variation of I(x) with x correctly?                        [JEE Main 12-Jan-2019 Evening]

A)   

B)        

C)   

D)        

Correct Answer: B

Solution :

[b] The moment of inertia I(x) at distance x is This equation resembles the standard equation of parabola i.e., Hence the curve will be parabolic.