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प्रश्न
State the relation between the refractive index μ and the velocity of light (vm) in that medium.
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उत्तर
`μ="Velocity of light in a vacuum (or air)"/"Velocity of light in the medium"="C"/"v"_"m"`
`"v"_"m"="C"/μ`

संबंधित प्रश्न
How is the refractive index of a medium related to the speed of light in it?
Complete Fig. 4.32 to show the path of the ray of single colour as it enters the prism and emerges out of it. Mark the angles wherever necessary.
The critical angle for glass-air is 45° for the light of yellow colour. State whether it will be less than, equal to, or more than 45° for (i) ref light, (ii) blue light?
Four students showed the following traces of the path of a ray of light passing through a rectangular glass slab.

The trace most likely to be correct is that of student
(A) I
(B) II
(C) III
(D) IV
Make the correct for each of the following :
With reference to the fig, the refractive index of the glass block is

Using the curve, how do you infer that for given prism, the angle of minimum deviation δmin is unique for the given light?

How does the deviation produced by a prism depend on the wavelength of incident light?
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(i) the base,
(ii) the refracting surfaces,
(iii) the refracting edge,
(iv) the refracting angle in it.
