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Physics, Science
10th
grade
Chapter 11 Refraction, Dispersion and Scattering of light
15 questions
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- 1. Multiple Choice
When white light enters a prism, it gets split into its constituent colours. This is due to
different refractive index for different wavelength of each colour
each colours has same velocity in the prism.
prism material have high density.
Scattering of light
- 2. Multiple Choice
The air layer of atmosphere whose temperature is less then the hot layer behave as optically
denser medium
rarer medium
inactive medium
either denser or rarer medium
- 3. Multiple Choice
Refraction of light by the earth’s atmosphere due to variation in air density is called
atmospheric reflection
atmospheric dispersion
atmospheric scattering
atmospheric refraction
- 4. Multiple Choice
The deflection of light by minute particles and molecules of the atmosphere in all direction is called ____________ of light.
dispersion
scattering
interference
tyndell effect
- 5. Multiple Choice
One cannot see through the fog, because
refractive index of the fog is very high
light suffers total reflection at droplets
fog absorbs light
light is scattered by the droplets
- 6. Multiple Choice
At noon the sun appears white as
light is least scattered
all the colours of the white light are scattered away
blue colour is scattered the most
red colour is scattered the most
- 7. Multiple Choice
Twinkling of stars is due to atmospheric
dispersion of light by water droplets
refraction of light by different layers of varying refractive indices
scattering of light by dust particles
internal reflection of light by clouds.
- 8. Multiple Choice
The clear sky appears blue because
blue light gets absorbed in the atmosphere.
ultraviolet radiations are absorbed in the atmosphere.
violet and blue lights get scattered more than lights of all other colours by the atmosphere.
light of all other colours is scattered more than the violet and blue colour lights by the atmosphere.
- 9. Multiple Choice
The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light
is scattered the most by smoke or fog
is scattered the least by smoke or fog
is absorbed the most by smoke or fog
moves fastest in air
- 10. Multiple Choice
The bluish colour of water in deep sea is due to
the presence of algae and other plants found in water
reflection of sky in water
scattering of light
absorption of light by the sea
- 11. Multiple Choice
When white light enters a glass prism from air, the angle of deviation is least for
blue light
yellow light
red light
violet light
- 12. Multiple Choice
When white light enters a glass prism from air, the angle of deviation is maximum for
blue light
yellow light
red light
violet light
- 13. Multiple Choice
Which of the following is a natural phenomenon which is caused by the dispersion of sunlight in the sky?
Twinkling of stars
Stars seem higher than they actually are
Rainbow
Advanced sunrise and delayed sunset
- 14. Multiple Choice
For which colour, refractive index of glass is maximum?
red
violet
green
yellow
- 15. Multiple Choice
The broad wavelength range of visible spectrum is-The broad wavelength range of visible spectrum is
(10000-20000) A
(4000-7000) A
(2000-4000) A
None of these
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