Differentiate between luminous and non-luminous objects.

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Solution

Luminous object
Non-luminous object
1.Luminous objects emit light of their own. 1.While non-luminous objects do not emit light of their own.
2.Luminous objects can be seen without the presence of an external light source. 2.Non-luminous objects require an external life source to be seen.
3.A sensation of light can be caused by luminous objects. 3.While sensation of light is not caused by a non-luminous object.
4.Candle and sun are examples of luminous objects 4.Football, stone and moon are examples of non-luminous objects.

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(a) What is meant by a luminous object? Name two luminous objects.

(b) What is meant by a non-luminous object? Name two non-luminous objects.

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The Sun is a __________ (luminous/ non-luminous) object whereas the moon is a _________ (luminous/ non-luminous) object.

Is Venus a luminous or a non luminous object?

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Luminous object	Non-luminous object
1.Luminous objects emit light of their own.	1.While non-luminous objects do not emit light of their own.
2.Luminous objects can be seen without the presence of an external light source.	2.Non-luminous objects require an external life source to be seen.
3.A sensation of light can be caused by luminous objects.	3.While sensation of light is not caused by a non-luminous object.
4.Candle and sun are examples of luminous objects	4.Football, stone and moon are examples of non-luminous objects.