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Question

# A person wants to AB part of his image (see fig). Hi8s eye level is at 1.8 m above the ground. If he uses minimum size of mirror required for this, find the height of the lowest point of mirror above the ground.

A
2.4m
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B
7.4m
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C
1.4m
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D
3.4m
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Solution

## The correct option is C 1.4mThe minimum size of mirror should be half the total height=1.5−12=0.52Now, height above required= (height from his eyes to A) / 2 =1.8−12 from level of A=0.82=0.4 from level AFrom ground =0.4+1=1.4m

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