5. What will be the value of angle of refraction, when the angle of incidence in denser medium is
equal to the critical angle for the given pair of media ?
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5. What will be the value of angle of refraction, when the angle of incidence in denser medium is
equal to the critical angle for the given pair of media ?
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Answer:
The critical angle is the angle of incidence where the angle of refraction is 90°. The light must travel from an optically more dense medium to an optically less dense medium. Figure 5.15: When the angle of incidence is equal to the critical angle, the angle of refraction is equal to 90°.