Which of the following types of mirrors are used as a reflector in street lamps so as to diverge light over a large area?

Plane mirror

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Concave mirror

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Convex mirror

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none of these

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Solution

The correct option is C
Convex mirror

Correct option:
Convex mirror:
The rays of light falling on the surface of a convex mirror get diverged.
Thus, they can be used in street lights as a reflector
These can be used to diverge light over a large area
Explanation for incorrect options:
Plane mirror : The rays of light are deflected but at small angles
Concave mirror: This converges light at a point
Hence, the correct option is (c).

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