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A light ray I is incident on a plane mir...

A light ray `I` is incident on a plane mirror `M`.The mirror is rotated in the direction as shown in the figure by an arrow at frequency `(9)/(pi) "rev"//"sec"`,The light reflected by the mirror is received on the wall `W` at a distance `10m`from the axis of rotation .When the angle of incidence becomes `37^(@)`find the speed of the spot (a point) on the wall?

A

10 m/s

B

1000 m/s

C

500 m/s

D

20 m/s

Text Solution

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The correct Answer is:
C
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