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.
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
The refractive index of water is 4/3. It means that
Light travels in water 4/3 times faster than in air.
Light travels in water 4/3 times slower than in air
Light travels in air and in water with the same speed
None of these
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.
The refractive index of water is 4/3 and of glass is 3/2. What is the refractive index of glass with respect to water?
1.33
1.252
1.125
1.5
The refractive index of water is 4/3. Then the critical angle for water – air interface.
98o
49o
28o
24o
A ray of light falls normally on a glass slab. What is the angle of refractions?
90o
180o
45o
0o
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
The correct statement is
The speed of all colors of light is same in air
The violet light travels than the red light in air
The red light travels faster than the violet light in air
None of the above.
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.
