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प्रश्न
Write the approximate values of speed of light in (i) air and (ii) glass. Use these values to calculate the refractive index of glass with respect to air.
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उत्तर
(i) Speed of light in air = 3 × 108 ms-1
(ii) Speed of light in glass = 2 × 108 ms-1
Refractive index of glass with respect to air
= `"Speed of light in air"/"Speed of light in glass"`
= `(3xx10^8)/(2xx10^8)`
= `3/2`
= 1.5
संबंधित प्रश्न
Select from the following the best experimental setup for tracing the path of a ray of light passing through a rectangular glass slab.

(a) P
(b) Q
(c) R
(d) S
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In each case, draw diagram to show the path taken by the ray as it passes through the glass block and emerges from it.
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(A) ∠i only
(B) ∠i and ∠r
(C) ∠i and ∠e
(D) ∠r and ∠e
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(a) Name the phenomenon that is taking place.
(b) What colour would you see at X and Y?
(c) What radiation would you detect above X and below Y?

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State the relation between the refractive index μ and the velocity of light (vm) in that medium.
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The refractive index of glass with respect to air is 3/2. What is the refractive index of air with respect to glass?
