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Q. A transparent oil with index of refraction 1.29 spills on surface of water (index of refraction 1.33), producing a highest of reflection with normally incident violet light (wavelength 400 nm in air). Assume the highest occurs in the first order; determine the thickness of the oil slick.

Q. A ceiling fan with 80-cm-diameter blades is turning at 60rpm. Suppose the fan coasts to a stop 30s after being turned off.

1.) What is the speed of the trip of a blade 10 s after the fan is turned off?

2.) By how various revolutions does the fan turn while stopping?

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Category:- Physics
Reference No.:- M9352043

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