Question

Which is not a non-luminous body?

• A. planets
• B. stars
• C. comets
• D. moon

Answer 1

The correct option is B

stars

Explanation for correct option:

1. Any body which emits light of its own is known as a luminous body.
2. Star is a luminous body because it has light of its own.
3. Hence, option (B) is correct.

Explanation for incorrect options:

1. Any body which does not emit light of its own is known as a non-luminous body.
2. Planets, comets, and the moon are non-luminous bodies.
3. Therefore, options (A), (C), and (D) are incorrect.

Hence, the correct answer is option B.