Question

Optically denser medium may not process greater mass density justify the statement with an example

Answer 1

Answer:

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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Explanation:

Answer 2

1. The optical density of a transparent medium is a measure of its speed.
2. If the speed of light in medium one is faster than that in medium two, medium one is optically rarer than medium two, with a lower optical density.
3. It should be clear from the given example that optical density is a relational quantity that is dependent on two mediums that are involved in the picture.
4. Consider turpentine and water.
5. Turpentine has a lower density than water, which means that its mass to volume ratio is lower, but it is optically denser.
6. It has a higher optical density than water.
7. In a nutshell, it is not necessary for one of two media to have higher optical density than the other.

Hence, the optically denser medium may not possess greater mass density.

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