Question

A point luminous object(O) is at a distance from front face of a glass slab of width d and of refractive index (mu) On the back face of slab is a reflecting plane mirror. An observer sees the image of object in mirror as shown in figure.Distance of image from front face as seen by observer will be
a. h+2d/mu
b.2h+2d
c.h+d
d.h+d/mu​

Answer 1

Answer:

h+2d/mu

Explanation:

h+d/mu _________(1),for side infront of mirror

d/mu for glass slab infront of mirror which is ad distance d/mu from mirror mm'

so h+d/mu+d/mu =h+2d/mu is total distance of image from observer