A luminous point object is moving along the principal axis

Last updated: 6/10/2023

A luminous point object is moving along the principal axis of a concave mirror of focal length 12 cm towards it When its distance from the mirror is 20 cm its velocity is 4 cm s The velocity of the Image in cm s at that instant is 6 towards the mirror 6 away from the mirror 9 away from the mirror 9 towards the mirror