Question

Which of the following are non-luminous objects?
A) Orion
B) Morning Star
C) Moon
D) Pole star
A. A and B
B. B and C
C. B and D
D. only C

Answer 1

The non-luminous object is D. only C) Moon.

Explanation:

• When an object emits its own light, then it is called as luminous object. When an object reflects the light from other object, then it is called as non-luminous objects.
• Luminous object can store energy such as light and heat but non-luminous object cannot store any energy.
• Luminous objects are visible as they have their own light but non-luminous objects are visible only in the presence of light.
• The colour of the reflected light depends on the colour of the incident light. Likewise, the colour of the non-luminous object depends on the light emitted by luminous object.
• The best example of luminous object is sun and the best example of non-luminous object is moon.

Answer 2

Answer:

The non-luminous object is D.

Luminous object can store energy such as light and heat but non-luminous object cannot store any energy.

Explanation:

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