In refraction of light through a prism, the light ray:
Suffers refraction only at one face of the prism
Emerges out from the prism in a direction parallel to the incident ray.
Bends at both the surface of prism towards its base.
Bends at both the surface of prism opposite to its base.
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
A ray of light falls normally on a glass slab. What is the angle of refractions?
90o
180o
45o
0o
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.
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.
A total reflecting prism can be used to deviate a ray of light through
30o
60o
75o
The refractive index of water is 4/3. Then the critical angle for water – air interface.
98o
49o
28o
24o
During refraction of light, which of the following quantities does not change
Wave length
Frequency
Direction
Speed.
A glass slab is placed over a piece of paper on which VIBGYOR is printed with each letter into its corresponding colors. The letter of which colour appears to be raised maximum of which color minimum?
Violet and Indigo
Red and Violet
Violet and Red
Orange and Red