question_answer

If a body moving in a circular path maintains constant speed of \[\frac{3}{2}ma\], then which of the following correctly describes relation between acceleration and radius? JEE Main Online Paper (Held On 10 April 2015)

A)

B)

C)

D)

Correct Answer: B

Solution :

                 Speed \[v=10m/\sec \] \[a=\frac{{{v}^{2}}}{R}\] \[\left| {\vec{v}} \right|=\]constant so \[a\propto \frac{1}{R}\]