Last Updated On 16-03-2023 - By Jeesha Sara
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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Question ID - 50311 :- 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?
|
(a) |
|
(b) |
|
|
(c) |
|
(d) |
|
Since Dm=(μ−1)A & on increasing the wavelength, μ decreases & hence Dm decreases.
Therefore correct answer is (b)
Next Question :
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The resistance of the meter bridge AB is given figure is 4
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(a) |
0.6 V |
(b) |
0.5 V |
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(c) |
0.3 V |
(d) |
0.4 V |
. With a cell of emf ε=0.5 V and rheostat resistance Rh= 2 
the null point is obtained at some point J. When the cell is replaced by another one of emf ε=
the same null point J is found for Rh=6 
. The emf 
is ;
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