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A concave mirror of focal length 20 cm i...

A concave mirror of focal length 20 cm is to be used as a shaving mirror. Which of the following is the suitable object distance from the mirror ?
(i)10 cm (ii)20 cm (iii) 30 cm.

Text Solution

Verified by Experts

For using a concave mirror as a shaving mirror, u lt f. Therefore, object distance can only be 10 cm.
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