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Light

Pranshu Sharma

25/04/2018 0 0

Light is a form of energy which makes us visible to see the objects .

Speed of light in air is 3,00,000 km /hr.

There are two types of mirror

1. Concave mirror :- the mirror which have it's reflecting surface at inner side and polished surface at the outer side.

2. Covex mirror :- the mirror which have it's reflecting at outer side and polished surface innner side .

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