A pendulum clock falls off the roof of a building. As the clock falls, what would happen to the period of the pendulum? A) The period would increase. B) The period would remain the same. C) The period would decrease

answer: the correct answer id option(d).

explanation:

snell's law refraction:

the angle of refraction =

the angle of incidence =

refractive index of air = = 1

refractive index of glycerol = 1.47

from the given options, the most closest answer to 63.72° is 65° of option (d).

the entire statement is true and correct.  

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