Question

The direction of acceleration of a body executing uniform circular motion is
A. Tangentially forward
B. Towards the centre
C. Tangentially backward
D. Away from the centre​

Answer 1

The direction acceleration of a body executing  uniform circular motion  is always towards the centre.

Hence option B is correct.

CONCEPT:

When a body executes uniform circular motion , the speed of body remains constant and only direction of body changes.

Since speed of body doesn't change, hence no tangential acceleration exists on body.

But,since the body is executing a circular motion, hence the body full have a centripetal acceleration . It is also called centre seeking acceleration.

This acceleration is always directed towards the  centre of point about which the body executes circular motion.

In this case , since tangential acceleration is zero, hence centripetal acceleration will provide the net acceleration to the body and it will point towards the centre .