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Question

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


A

Plane mirror

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B

Concave mirror

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C

Convex mirror

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D

none of these

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Solution

The correct option is C

Convex mirror


Correct option:

  1. Convex mirror:
    1. The rays of light falling on the surface of a convex mirror get diverged.
    2. Thus, they can be used in street lights as a reflector
    3. These can be used to diverge light over a large area

Explanation for incorrect options:

  1. Plane mirror : The rays of light are deflected but at small angles
  2. Concave mirror: This converges light at a point

Hence, the correct option is (c).


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