Question

A plane mirror is moved towards an object with a speed of 5m/s, then find out the speed with which the image approaches the object?

Answer 1

Answer:

The speed of the image will be twice that of the object I,e 10m/s. This is due to the fact that when you bring the mirror closer to the object, the image also moves closer. Thus when you move the mirror closer by 5 metres in one second, the image gets closer by 10 metres. Therefore the image covers twice the distance in same time interval and has its speed equal to twice the object's.

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