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Questions  

A plane mirror is approaching you with 10 cms1 you can see your image in it. At what speed will your image approach you?

a
10 c ms−1
b
15 cm s−1
c
20 cm s−1
d
25 cm s−1

detailed solution

Correct option is C

v→I=−v→o+2v→m=−0+2(10)=20 cm s−1

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