For a total internal reflection, which o...

For a total internal reflection, which of the following is correct ?

Light travel from rarer to denser medium.

Light travel from denser to rarer medium.

Light travels in air only.

Light travels in water only.

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The correct Answer is:

In total internal reflection, light travel from denser to rarer medium.

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In the diagram shown, a ray of light is incident on the interface between 1 and 2 at angle slightly greater than critical angle. The light surfers total internal reflection at this interface. After that the light ray falls at the interface of 1 and 3, and again it suffers total internal reflection. Which of the following relations should hold true?

`mu_(1) gt mu_(2) lt mu_(3)`

`mu_(1)^(2)-mu_(2)^(2) gt mu_(3)^(2)`

`mu_(1)^(2)-mu_(3)^(2) gt mu_(2)^(2)`

`mu_(1)^(2)+mu_(2)^(2) gt mu_(3)^(2)`

from rarer to denser medium

from denser to rarer medium

in air only

in water only

light ray is travelling from denser medium to rarer medium

light ray is travelling from rarer medium to denser medium

refractive indices of the two media are widely different

refractive indices of the two media are close to each other