GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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39.7 degrees
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19.2 degrees
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59.1 degrees
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12.3 degrees
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Detailed explanation-1: -To answer this question, we need to first determine what the angle of incidence is. This is the angle at which the light hits the surface. The angle of incidence for light traveling from air to crown glass is 30 degrees from the normal. This means that the angle of refraction is 9.10 degrees.
Detailed explanation-2: -When light enters from air to glass the angle of incidence and refraction in air and glass are 45° and 30° respectively.
Detailed explanation-3: -It can be given as, Here (n₁ and n₂) are the index and reflective index and (₁ and ₂) are the incident and reflected angle. The angle of incidence of light traveling through air, and then striking water, is 30 degrees. The index of reflection of air is 1 and the index of reflection of water is 1.33.