How far would it have travelled in a vacuum

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Q. A flat sheet of crystalline quartz has a thickness of 1.6 cm. It is on top of the flat sheet of diamond that has a thickness of 2.10 cm. Light strikes the crystalline quartz perpendicularly and travels through it and then throughout the diamond. In the time it takes the light to travel through the two sheets, how far would it have travelled in a vacuum?

Reference no: EM1384757

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