Question

___________ objects emit their own light, ___________ objects do not emit their own light.

• A. Luminous
• B. Non luminous

Answer 1

1. Objects that emit their own light are called luminous objects. e.g. the sun, stars, bulb.
2. Objects that do not emit their own light but reflect light from them from a luminous source are called non-luminous objects. e.g. the moon, planets.

Hence, luminous objects emit their own light, non-luminous objects do not emit their own light.