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Question

A hairdresser stands with her nose $$20\ cm$$ in front of a plane mirror. For what distance must she focus her eyes in order to see her nose in the mirror?

A
$$40\ cm$$
B
$$50\ cm$$
C
$$30\ cm$$
D
$$60\ cm$$
Solution
Verified by Toppr

Correct option is A. $$40\ cm$$
From the figure, image is situated at $$40$$ cm from eye. Hence, (a) is correct.

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