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  4. Which mirror is to be used to obtain a parallel beam of light from a small lamp?

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Q. Which mirror is to be used to obtain a parallel beam of light from a small lamp?

BITSATBITSAT 2005

Solution:

Concave mirrors are commonly used to get powerful parallel beams of light to focus the light at the longer distances by placing the source of light at the focus of the Concave mirrors.

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