Question

A plane mirror is approaching you at 8 cm/s. You are able to see your image in it. At what speed will your image approach you? a) 4 cm/s b) 8 cm/s c) 16 cm/s d) 24 cm/s

Answer 1

Answer:

In a plane mirror if the mirror moves at speed of v, then the image moves at a speed of 2v.

In a plane mirror if the mirror moves at speed of v, then the image moves at a speed of 2v.So, in this case, as mirror is moving at a speed 10 cm/s, the image will move at a speed of (2)×(10)cm/s =20cm/s

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