WorksheetsLAST ROUND - SSLC PHYSICS
Total questions: 44
Worksheet time: 22mins
Why is the spectrum of light separated into its components of color when white light is directed to a prism?
Because light reflects off the prism's surface
The incident white light refracts and separates into its constituent colors
The white light is absorbed by the prism, separating its colors
The light speeds up as it moves from air into the denser plastic material
Why is the component of color in a rainbow can be seen when light passes through a glass prism?
phenomena of scattering of light
phenomena of dispersion of light
phenomena of reflection of light
phenomena of diffraction of light
This is the example of dispersion of light
sky looks bright orange in the evening
shadow
Pool seems shallower
rainbow
these are examples of phenomenon of scattering of light except
Sky appears blue at midday
Sky appears reddish in the evening
Rainbow after rain
Why does scattering of light occur?
Light rays are reflected by atmospheric molecules and scatter in all directions
Light rays are blocked and refracted to all directions by the clouds or particles in the air
Light rays are transmitted and refracted in all directions by the clouds or particles in the air
Which of the following is example light scattering ?
( There CAN be more than 1 answer)
Which of the following natural phenomenons occur due to light dispersion.
How many components of white light?
5
6
7
8
Why is the spectrum of light seperated into its components of colour when white light is directed to a prism?
The different colours in the white light bend away from the normal line at different angles when entering prism
The different colours in the white light bend towards the normal line at different angles when entering prism
The different colours in the white light bend away from the normal at same speed to each other when entering prism
The different colours in the white light bend towards the normal at same speed to each other when entering prism
Why is red light is at the top whileviolet at the bottom of the spectrum?
Violet light has the medium speed so it is refracted the least.
Violet light has the highest speed so it is refracted the least
Red light has the slowest speed so it is refracted the least
Red light has the highest speed so it is refracted the least.
Look at the diagram given. This is the first prism. What happen if A SECOND inverted prism is placed behind the first prism?
the various colours pass through it and form brighter spectrum
the various colours pass through it and form a white light back
the various colours pass through it and form an opposite spectrum colours
nothing will happen
This is the example of dispersion of light
sky looks bright orange in the evening
shadow
Pool seems shallower
rainbow
These are all colours of spectrum except
indigo
blue
purple
green
This is a phenomena scattering of wave during ______________ .
Blue colour is scattered _______ compared to the ______ colour.
sunset, more, yellow
sunset, less, red
the day, more, yellow
the day, less, yellow
This is a phenomena scattering of wave during ______________ .
Blue colour is scattered _______ compared to the ______ colour.
sunset, more, yellow
sunset, less, red
the day, more, yellow
the day, less, yellow
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
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
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 deflection of light by minute particles and molecules of the atmosphere in all direction is called ____________ of light.
dispersion
scattering
interference
tyndell effect
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
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
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.
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
When white light enters a glass prism from air, the angle of deviation is least for
blue light
yellow light
red light
violet light
When white light enters a glass prism from air, the angle of deviation is maximum for
blue light
yellow light
red light
violet light
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
For which colour, refractive index of glass is maximum?
red
violet
green
yellow
Light scattering is a splitting process of white light into its colour constituents.
True
False
Blue light is the least scattered.
True
False
What happens to light during total internal reflection?
The angle of incidence is greater than the critical angle.
The angle of reflection is the same as the critical angle.
The angle of refraction is less than the critical angle.
The angle of incidence is zero.
Fiber optic cables work because of the principle of _____.
total internal refraction
incomplete internal refraction
total internal reflection
partial internal reflection
When angle of incident (i) equals to critical angle (c) if light is traveled from a denser medium to a less dense medium,
total internal reflection occurs.
angle of refraction is equal to 90 degree.
light is refracted out
light travel in straight line
Which of the following statement about optical fibre is incorrect?
Light is totally internally reflected down the fibre.
It is used in medical (endoscope).
It is used in fibre optic communication.
Angle of incidence of light in optical fibre must less than critical angle.
Choose the correct statement that describes what happens to the ray of light if the critical angle is 48o and the angle of incidence is 48o
refract
totally internally reflect
travel along the boundary
Chose the TWO conditions are NOT correct for total internal reflection to take place
The incident angle should be less than the critical angle
The incident angle should be greater than the critical angle
Light should travel from a denser to a lighter medium
Light should travel from a lighter to a denser medium
When light passes at an angle to the normal from one medium into another in which its speed is higher
it is bent toward the normal.
it always lies along the normal.
it is unaffected.
it is bent away from the normal.
Based on the image, as light passes from medium 1 to medium 2
light speeds up and bends towards the normal
light speeds up and bends away from the normal
light slows down and bends towards the normal
light slows down and bends away from the normal
Which of the following is true?
When light travels from a vacuum into glass it speeds up.
When light travels from a vacuum into glass it bends away from the normal.
When light travels from a vacuum into glass the frequency decreases.
When light travels from a vacuum into glass the wavelength decreases.
Why is the component of color in a rainbow can be seen when light passes through a glass prism?
phenomena of scattering of light
phenomena of dispersion of light
phenomena of reflection of light
phenomena of diffraction of light
