A water pond appears to be 2.7m deep. If the refractive index of water is 4/3. Then the actual depth of the pond is
3.6 m
7.2m
4.8m
3.8m
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.
A ray of light falls normally on a glass slab. What is the angle of refractions?
90o
180o
45o
0o
A total reflecting prism can be used to deviate a ray of light through
30o
60o
75o
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 refractive index of glass is 3/2. What is the critical angle for glass – air surface?(sin 42° = 2/3)
38°
48°
42°
39°
Which of the following has the highest refractive index:
Glass
Water
Diamond
Ruby
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
A small air bubble in a glass block when seen from above appears to be raised because of
Refraction of light
Reflection of light
Reflection and refraction of light
None of these.
Red light of wavelength 6600 Å traveling 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 wavelength of light in water is
2950 Å
5920 Å
4950 Å
1950 Å
