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Write condition for total internal refle...

Write condition for total internal reflection.

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What is total internal reflection ?

Write the necessary conditions for the phenomenon of total internal reflection to take place. How does one account for the brilliance exhibited by a diamond when it is suitably cut ? 5

If critical angle for total internal reflection in diamond is 24.5^@ , then refractive index of diamond is ...... [Take sin 24.5^@ = 0.4147]

A ray of light enters in denser medium from rarer medium. Speed of light in rarer medium is double than that in denser medium, what is the critical angle for total internal reflection ?

If the critical angle for total internal reflection from a medium to vacuum is 30^@ , then velocity of light in the medium is .......... ms^(-1) . (c = 3.8 xx 10^8 m s^(-1) )

The figure shows the path of a ray passing through an equiangular prism PQR. It is incident on face PR at angle slightly greater than the critical angle for total internal reflection . If the angle alpha shown in the figure is 30^(@) . Calculate the R.I. of the material of the prism.

Explain internal reflection and total internal reflection.

Where the phenomena of total internal reflection can be observed ?

Assertion : The images formed by total internal reflections are much brighter than those formed by mirrorrs or lenses. Reason : There is no loss of intensity in total internal reflection.

Explain the phenomena of total internal reflection in right angle prism.