NEW
Font size
WorksheetsHuman Eye- Colourful World
Total questions: 10
Worksheet time: 20mins
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 the air
The splitting of white light into different colours on passing through a prism is called
reflection
refraction
dispersion
deviation
The various angles are labelled in the image. Which angle shows the angle of incidence and angle of refraction, respectively?
A & D
B & E
C & F
D & F
The deflection of light by minute particles and molecules of the atmosphere in all directions is called ____________ of light.
DISPERSION
SCATTERING
INTERFERENCE
TYNDALL EFFECT
What will be the colours of the A, B and C?
C: red; B: green; A: violet
C: violet; B: green; A: red
C: green; B: violet; A: red
C: red; B: violet; A: green
Which image shows the deviation of light in a prism?
I
II
III
IV
When white light enters a glass prism from the air, the angle of deviation is least for
Blue light
Yellow light
Violet light
Red light
When white light enters a prism, it gets split into its constituent colours. This is due to
different refractive index for the different wavelengths of each colour
each colour having the same velocity in the prism
prism material having high density
Scattering of light
Why do stars appear to twinkle at night?
Because the light of stars travels in a different medium
Because the distance of a star varies when the earth rotates
Because the star changes its position relative to the earth
Because the atmosphere reflects the light at different angles
Which of the following phenomena of light are involved in the formation of a rainbow?
Reflection, refraction and dispersion
Refraction, dispersion and total internal reflection
Refraction, dispersion and internal reflection
Dispersion, scattering and total internal reflection
