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प्रश्न
Write the necessary conditions for the phenomenon of total internal reflection to
occur ?
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उत्तर
Necessary conditions for total internal reflection to occur are:
(i) The incident ray on the interface should travel in optically denser medium.
(ii) The angle of incidence should be greater than the critical angle for the given pair of optical media.
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संबंधित प्रश्न
Which colour of light has a higher critical angle? Red light or green light.
Angle of deviation is the angle which the ______ ray makes with the direction of ______ray.
Make the correct choices for each of the following :
Total Internal reflection takes place when
(where ∠i = angle of incidence, ∠r = angle of refraction, ∠C = critical angle)
In the following figure, show two rays A and B travelling from water to air. If the critical angle for water- air surface is 48°, complete the ray diagram showing the refracted rays for each. State conditions when the ray will suffer total internal reflection.
How does a ray of light bend when it travels from denser to rarer medium.
Why do diamonds sparkle?
What is meant by the term ‘critical angle’?
A green light is incident from the water to the air-water interface at the critical angle (C). Select the correct statement.
Which one of the following is NOT the correct formula for refractive index of glass w.r.t. air (aμg) (i = angle of incidence, r = angle of refraction)
A rectangular block of glass ABCD has a refractive index 1.6. A pin is placed midway on the face AB (Figure). When observed from the face AD, the pin shall ______.
- appear to be near A.
- appear to be near D.
- appear to be at the centre of AD.
- not be seen at all.
