Red light of wavelength 6600 A0 travelling in air gets refracted in water. If the speed of light in air is 3x108 ms-1 and refractive index of water is 4/3. Then the frequency of light in air is.
2.25x108 Hz
4.54 x 10 14Hz
4.54 x 108 Hz
2.54 x 1014 Hz.
With increase in angle of incidence of incident light, the angle of deviation produced by the prism.
Decreases
Increases
First decreases, becomes minimum and then increases.
First increases becomes maximum and then decrease.
Total internal reflection occurs when.
No light is allowed to enter or leave a medium
The light travels from a rarer to a denser medium at an angle of incidence greater than the critical angle.
The light travels from a denser to a rarer medium
The light travels from a denser to a rarer medium at an angle of incidence greater than the critical angle.
A total reflecting prism can be used to deviate a ray of light through
30o
60o
75o
90o
The deviation produced by an equilateral prism, when a ray of light is incident on it, does not depend on:
Angle of incidence
Color of light
Material of prism
Angle of prism.
Which of the following has the highest refractive index:
Glass
Water
Diamond
Ruby
During refraction of light, which of the following quantities does not change
Wave length
Frequency
Direction
Speed.
When a ray of light from air enters a denser medium, it
Bends away from the normal
Bends towards the normal
Goes on deviated
Is reflected back
Refractive index of water is 4/3 speed of light in vaccum is 3x108ms-1. Then the speed of light in water is:
1.33 x 2,25 x 108ms-1
2.25 x 108ms-1
2.25 x 107ms-1
1.25 x 108ms-1
A ray of light falls normally on a glass slab. What is the angle of refractions?
180o
45o
0o
