The absolute refractive index of water is.4/3 . The critical angle of water is
A) sinc = 4/3
B) c = sin-1(4/3 )
C) c = sin-1(3/4)
D) 0°
1 Answers
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The refractive index of the kerosene is greater than the refractive index of water.
A) both x and y are true
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Refractive index of glass relative to water is 9/8. The refractive index of water relative to glass is …………………
Correct option is D) 8/9
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The refractive index of glass for light going from aif’to glass is 3/2. The refractive index of air for light going from glass to air ………………….
Correct option is C) 4/6
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Correct option is D) 8/9
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Correct option is C) n = \(\frac{1}{sin \,c}\)
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C) sin-1 (1/2)
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(B) sin-1(1/2)
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The Convex lens behaves as a converging lens if it is kept in a medium with refractive index less than the refractive index of the lens.
B) Both statements are false
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Light travels from a medium of refractive index µ1 to another of refractive index µ2 (µ1 > µ2). For total internal reflection
(D) Light must travel from the medium of refractive index µ2 to µ1.
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Commonly used glass have refractive index of 1.5. What is the critical angle for such glass?
Correct option is: (B) 42°
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