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Question

Choose the object that emits light on its own.

A
Asteroid
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B
Sun
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C
Moon
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D
Earth
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Solution

The correct option is B Sun
Luminous objects emit their own light. Eg: Sun, stars, candle flame, firefly, bulb, torch, etc.
Non-luminous objects are visible after they reflect the light falling on it. Eg: Moon, Earth, table, book, etc.

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