Is it necessary that an optically denser medium should possess greater mass density than optically rarer medium? The speed of light in air 3 x 108 m/s. If the refractive index of glass is 1.5, find the time takenby light to travel a distance of 10 cm in glass?
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Explanation:
It is not necessary that an optically denser medium may possess greater mass density than an optically rarer medium. For example, kerosene or turpentine oil, having higher refractive index, is optically denser than water, although its mass density is less (as oil floats on the surface of water) than that of water.
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Answer:
It is not necessary that an optically denser medium may possess greater mass density than optically rarer medium .
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