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Question

The reflecting surface of a plane mirror is vertical. A particle is a project in a vertical plane also perpendicular to the mirror .the initial speed of the particle is 10m/s and the angle of project 600 from the normal of the mirror. the point of projection is at a distance 5m from particle moves towards the mirror. just before the particle touches the mirror. the velocity of approving of the particle and the image is:

A
12 m/s
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B
5 m/s
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C
10 m/s
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D
55m/s
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Solution

The correct option is C 10 m/s
In given figure,
Vapp=5+5=10m/s
Option C is correct.

1380988_1262002_ans_b0eb4a914383463f87edcdf646a7da7e.png

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