A plane mirror rotates about a vertical axis in its plane at 35 revs s^-1 and...

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Physics

A plane mirror rotates about a vertical axis in its plane at 35revs s^-1 and reflects a narrow beam of light to a stationarymirror 200 m away. This mirror reflects the light normally so thatit is again reflected from the rotating mirror. The light now makesan angle of 2.0 minutes with the path it would travel if bothmirrors were stationary. Calculate the velocity of light.
Please can you explain the solution to this question step bystep with a clear diagram! I am really confused on what to picturewhen about a vertical axis in its plane at 35 revss^-1 and when it says , light now makes an angle of 2.0 minuteswith the path? how can an angle be in seconds?

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3.8 Ratings (539 Votes)

First of all the angle given in 2 minutes has nothing to dowith time minuteThe minute and second are smaller units of angle one minute is160 of a degree and 1 second is 160 of a minute This has nothingto do with time in secondNow let See Answer

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