____________ are used as reflectors in the torchlights.

Concave mirrors

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Plane mirrors

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Convex mirrors

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None of the above

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Solution

The correct option is A Concave mirrors
A torch has a bulb working on a battery. A bulb spreads its light rays in all directions. This means it diverges a lot. A concave mirror is a converging mirror and reduces the divergence.

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Similar questions

State the kind of mirror used

(a) by a dentist,

(b) as a search-light reflector.

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