Find the time required for light to travel vertically from the surface of the ic

Question

Find the time required for light to travel vertically from the surface of the ice to the bottom of the pond. Express your answer using two significant figures. T = ? ns Find the time required for light to travel vertically from the surface of the ice to the bottom of the pond. Express your answer using two significant figures. T = ? ns A pond with a total depth (ice + water) of 2.50 {rm m} is covered by a transparent layer of ice, with a thickness of 0.35 {rm m}. Find the time required for light to travel vertically from the surface of the ice to the bottom of the pond. Express your answer using two significant figures. T = ? ns

Explanation / Answer

ice: ni = 1.31

water: nw = 1.33

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ice:

ti = xi/ci = xi/(ci/ni) = 0.35/(3e8/1.31) = 1.528 ns

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water:

tw = xw/cw = xw/(cw/nw) = (2.50-0.35)/(3e8/1.33) = 9.532 ns

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t = ti + tw = 1.528 + 9.532 = 11.1 ns

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Answer: 11.1 ns

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