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प्रश्न
Small air bubbles rising up a fish tank appear silvery when viewed from some particular angle is due to the ______.
विकल्प
reflection
refraction
dispersion
total internal reflection
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उत्तर
Small air bubbles rising up a fish tank appear silvery when viewed from some particular angle is due to the total internal reflection.
Explanation:
If the angle of incidence is larger than the critical angle, a light beam that is travelling from an optically denser to a rarer medium reflects back into the denser medium.
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संबंधित प्रश्न
Name the factors affecting the critical angle for the pair of media.
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Solve Numerical example.
From the given data set, determine angular dispersion by the prism and dispersive power of its material for extreme colours. nR = 1.62 nV = 1.66, δR = 3.1°
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- The angle of incidence (∠r2) at face AC.
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