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WorksheetsAtmospheric Refraction
Total questions: 24
Worksheet time: 12mins
The colored light that refracts most while passing through a prism is
Red
Yellow
Blue
Violet
The change in focal length of an eye tens is caused by the action of the
retina
pupil
ciliary muscles
iris
Refraction of light by the earth’s atmosphere due to variation in air density is called
atmospheric reflection
atmospheric dispersion
atmospheric scattering
atmospheric refraction
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
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
Which of the following is a natural phenomenon which is caused by the dispersion of sunlight in the sky?
Rainbow
Twinkling of stars
Advanced sunrise and delayed sunset
Stars seem higher than they actually are
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
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
When a white light falls on a triangular prism, the colour of light which will deviate the least is
violet
green
blue
red
Formation of rainbow is due to..........
refraction of light
scattering of light
dispersion of light
atmospherics refraction
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 angle between angle of incidence and the angle of emergence is called...........
angle of emergence
angle of prism
angle of deviation
critical angle
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
In which of the following cases will no dispersion take place when sunlight passes through it?
a
b
c
d
The splitting of white light into different colours on passing through a prism is called
reflection
refraction
dispersion
deviation
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
When white light enters a glass prism from air, the angle of deviation is least for
blue light
yellow light
violet light
red light
Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight.
Isaac Newton
Einstein
Kepler
Hans Christian Oersted
……….. of light causes the blue colour of sky and reddening of the Sun at sunrise and sunset.
(a)
A prism ABC (with BC as base) is placed in different orientations. A narrow beam of white light is incident on the prism as shown in figure. In which of the following cases, after dispersion, the third colour from the top corresponds to the colour of the sky?
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
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
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
