Question: As shown below, a rotating mirror with 16 sides was used to measure the time it took light to travel 3.5 km to a concave

As shown below, a rotating mirror with 16 sides was used to measure the time it took light to travel 3.5 km to a concave mirror and back. At what frequency did the rotating mirror need to turn to make 1/16th of a rotation in the time it took light to travel to 3.5 km and back again? light source distant concave mirror rotating mirror

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