A room (cubical) is made of mirros. An insect is moving along the diagonal on the floor such that the velocity of image of insect on two adjacent wall mirrors is `10(cm)/(sec)`. The velocity of image of insect in ceiling mirror is

Options

A. `10(cm)/(sec)`
B. `20(cm)/(sec)`
C. `(10)/(sqrt2)(cm)/(sec)`
D. `10sqrt2(cm)/(sec)`

Answer

D

Explanation

In the ceiling mirror, same velocity will be observed