Q.

A man 160 cm high stands in front of a plane mirror. Then the minimum height of the plane mirror for him to see his full length image is

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a

340 cm

b

170 cm

c

 80 cm    

d

85 cm 

answer is C.

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Detailed Solution

The minimum length of the plane mirror for a man of hieght H to see his full length image is H/2

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