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In Fizeau's Experiment for Measuring the Speed of Light, the Wheel

Question 14

Multiple Choice

In Fizeau's experiment for measuring the speed of light, the wheel has 475 notches. What rotational speed is required for the return beam of light to pass through the next notch? The time between successive notches is 6.65 × 10-5 s.


A) 20.4 rev/sec
B) 16.6 rev/sec
C) 31.7 rev/sec
D) 66.4 rev/sec
E) 90.9 rev/sec

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