Question

In the image below, what is/are the luminous object(s) among the torch, the mirror, and the screen?

• A.
• B.
• C.

Answer 1

The correct option is C

Luminous objects are those that produce their own light. Torch is luminous because it does so, while the mirror is not as it only reflects the light coming from the torch onto the screen. The glow on the screen is again due to the light from the torch, hence it is also a non-luminous object.