WorksheetsAtmospheric Refraction & Scattering
Total questions: 12
Worksheet time: 12mins
Refraction of light by the earth’s atmosphere due to variation in air density is called
atmospheric reflection
atmospheric dispersion
atmospheric scattering
atmospheric refraction
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 absorbed the most by smoke or fog
is scattered the least by smoke or fog
moves fastest in air
One cannot see through the fog, because
refractive index of the fog is very high
fog absorbs light
light is scattered by the droplets
light suffers total reflection at droplets
Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?
Dispersion of light
Scattering of light
Total internal reflection of light
Reflection of light from the earth
View Answer
Atmospherics refraction explains the natural phenomena
twinkling of stars
Sky appears blue
Refraction of light through a prism
rainbow formation
Assertion: Planets do not twinkle
Reason: Light rays do not come from planet
Assertion and reason are true. Reason is the correct explanation of Assertion
Assertion and reason are false
Assertion is false, but reason is true
Assertion is true, but reason is false
The star appear shifted from their actual position due to the phenomenon of:
Diffraction of light
Scattering of light
Refraction of light
Reflection of light
At noon, the Sun appears white as
blue colour is scattered the most
red colour is scattered the most
light is least scattered
all the colours of the white light are scattered away
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
What is the reason behind twinkling of stars ?
Refraction of starlight while passing through layers of earth's atmosphere
Earth's atmosphere is not steady and so there is change in refractive index
Both A and B
None of these
Stars twinkle but planets can’t. Why?
Closer planets are not point source, but due to long distance stars appear as point source
Stars have ability to transmit light in fragments while planet transmit light continuously
Light from star travel faster than planets
None of these
The deflection of light by minute particles and molecules of the atmosphere in all direction is called ____________ of light.
dispersion
scattering
Reflection
Refraction
