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Figure shows a torch producing a straigh...

Figure shows a torch producing a straight light beam falling on a plane mirror at an angle `60^(@)` The reflected beam makes a spot P on the screen along y-axis . If at t=0, mirror starts ratating about the hinge A with an angular velocity `(omega)=1^(@)` per second clockwise. Find the speed of the spot on screen after time t = 15 s.

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The correct Answer is:
`(2pi)/(15)m//s`
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PHYSICS GALAXY - ASHISH ARORA-GEOMETRICAL OPTICS-Unsolved Numerical Problems
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