Question

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Answer 1

Answer:

For a given incident ray, if the mirror is rotated through an angle θ , then the reflected ray turns through an angle of 2 θ . So if angular speed of mirror is ω then the angular speed by which the reflected ray is rotated is 2 ω.

"and the speed is 2×500 = 1000 m/sec"

Answer 2

Answer:

v=1825/4

i think answer will be none of these

or may be i have done any mistake....