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# Whats the speed

Hi guys. I have got a problem. Can you solve it and give the solutions and answers. A person is moving towards a plane mirror with a speed of 5m/s. The speed with which the image moves is (a) 5m/s (b) 10m/s (c) 20m/s (d) 0 m/s

Note by Tanveen Dhingra
2 years, 9 months ago

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(b )10m/s

- 2 years, 6 months ago

The image moves with a speed of 5m/s w.r.t the mirror . In other words the image comes closer to the person w.r.t 10m/s.

- 2 years, 8 months ago

@Calvin Lin hey sir can u help me

- 2 years, 9 months ago

I remember when we made an experiment on mirrors and we learned that the distance from the image to the mirror and the distance from the real object to the mirror is the same. Hence, the image "moves" at $$5$$ m/s also.

- 2 years, 9 months ago