Question

The handle of a cricket bat or a badminton racket is usually rough explain the reason

Answer 1

thats to get the grip there is no scientific reason for the handle being rough.
If I am wrong pls comment :)
anyway I hope this is helpful

Answer 2

one reason is that if the handle was smooth,it would easily slip off from the hand while playing.making the handle rough, decreases its chance of slipping off

hope it helped