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Question

Which of the following objects is luminous?

A
The Sun
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B
Earth
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C
The Moon
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D
Mirror
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Solution

The correct option is A The Sun
Luminous objects emit their own light which may come to our eyes directly or through reflection by non-luminous objects thus enabling us to see. Examples of luminous objects are stars, fireflies, candles, and flashlights etc. The Moon and the planets like Earth, are not luminous as they cannot produce light on their own. They simply reflect the Sun's light.

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