Question

5.
[
1
From the above problem. Which colour will have maximum angle of refraction.
a) Violet
b) Blue
c) Green
d) Red
The limitting angle of the prism of refractive index u is.
6.
[
1
a) sin ?
b) sint 1
c) 2sin 2
d) 2sin
!
7.
8.
When white light enters a prism, it gets split into its constituent colours. This is due to[ 1
a) High density of prism material
b) u is different for different wave lengths
c) Diffraction of light
d) Velocity changes for different frequencies
In the position of minimum deviation when a ray of yellow colour passes through the prism,
then its angle of incidence is
[ 1
a) Less than the emergent angle
b) Greater than the emergent angle
c) Sum of angle of incidence and emergent angle is 9
d) Equal to the emergent angle​

Answer 1

Answer:

Violet undergoes maximum deviation while passing through a prism because it has least wavelength , as we know,

We know, ν×λ=c

Frequency is a constant quantity.

also,

μ=

velocity of light in a medium

velocity of light in vacuum

so, refractive index property for violet will be maximum and it will refract the most. and will have the greatest deviation.

December 27, 2019