How long does it take light to travel through a 3.2-mm-thick piece of window glass? Express...

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Question

How long does it take light to travel through a 3.2-mm-thick piece of window glass? Express your answer in seconds.

Answer 1

Answer #1

time = distance / speed

speed of light in material medium v= c/n

time t = d*n/v and refractive index of glass n = 1.5

time t = {(3.2 mm)*1.5}/(3*10⁸ m/s)= (3.2*10^-3 * 1.5 )/ (3*10⁸ ) = 1.6*10^-11 seconds

time t = 1.6*10^-11 seconds

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Answer 2

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