7. A student moves towards a fixed plane mirror with speed
of 5km/h, then what will be the speed of his image:
(A) 5km/hr
(B)-5km/hr
(C)10km/hr
(D)-10 km/hr
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Answer:
A) 5km/hr
Explanation:
as in the plane mirror , it doesn't change the looks of real object.
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