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Refractive Index

is it necesar...

Question

is it necesary that an optically denser medium should posses greater mass density than optically rarer medium?

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Solution

No it is not so. Don’t confuse optically dense and rare medium with the density of a medium. Eg. Optically oil is denser than water, although, water has more mass density than oil.

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Q. Which of the following conditions are necessary for total internal reflection to take place at the boundary of two optical media ?
1. Light is passing from optically denser medium to optically rarer medium.
2. Light is passing from optically rarer medium to optically denser medium.
3.Angle of incidence is greater than the critical angle.
4.Angle of incidence is less than the critical angle.

Q. Mediums with ________ values of refractive index are optically denser than rarer mediums.

A ray of light going from an optically rarer medium to an optically denser medium

Total Internal reflection happens only when light is travelling from an optically denser medium to an optically rarer medium.

A monochromatic beam of light passes from an optically denser medium into an optically rarer medium. As a result, ____.

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