Time taken by light to cross a glass slab of thickness 4 mm and refractive index 3 is
(A) 4 × 10-11 s
(B) 2 × 10-11 ns
(C) 16 × 10-11 s
(D) 8 × 10-10 s
1 Answers
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If the refractive index of glass is 3/2 then the speed of light in glass is
Correct option is B) 2 × 108 ms-1
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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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The refractive index of glass with respect to air is 3/2 and the refractive index of water with respect to air is 3/2.
Correct option is D) 8/9
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Refractive index of the glass slab =
C) \(\frac{Thickness \,of \,the \,glass \,slab}{Thickness \,of\, the \,glass \,slab\, – \,verticalshift}\)
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Thickness of a glass slab is 3 cm and its refractive index is 2, then its vertical shift is…………………
Correct option is A) 1.5
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Raju is doing an experiment with the glass slab. He focussed the light towards the glass slab at an angle 30°.
Correct option is A) 30°
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Ramu placed a rectangular glass slab over printed letters. The letters appears while ………………. viewing through a glass slab.
B) nearer as its original position
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If the thickness’ of the glass slab increases then the refractive index of the glass slab …………………
C) remains same
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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.
2 Answers 1 views