The variation of refractive index of a crown glass thin prism with wavelength of the incident light is shown. Which of the following graphs is the correct one, if Dm is the angle of minimum deviation?
(a)
(b)
(c)
(d)
(a)
(b)
(c)
(d)
Question ID - 50311 | SaraNextGen Top Answer The variation of refractive index of a crown glass thin prism with wavelength of the incident light is shown. Which of the following graphs is the correct one, if Dm is the angle of minimum deviation?
(a)
(b)
(c)
(d)
The variation of refractive index of a crown glass thin prism with wavelength of the incident light is shown. Which of the following graphs is the correct one, if Dm is the angle of minimum deviation?
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(a) |
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(b) |
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(c) |
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(d) |
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1 Answer
127 votes
Answer Key / Explanation : (b) -
Since Dm=(μ−1)A & on increasing the wavelength, μ decreases & hence Dm decreases.
Therefore correct answer is (b)
127 votes
Answer Link
127