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Human Eye and the Colourful World

Description: refraction #dispersion #Scattering of light
Number of Questions: 15
Created by:
Tags: science
Attempted 0/15 Correct 0 Score 0

The splitting of white light into its component colours is called

  1. refraction

  2. dispersion

  3. Tyndall effect

  4. reflection


Correct Option: B

Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?

  1. Dispersion of light

  2. Scattering of light

  3. Total internal reflection of light

  4. Reflection of light from the earth


Correct Option: B

Which of the following phenomena of light are involved in the formation of a rainbow?

  1. Reflection, refraction and dispersion

  2. Refraction, dispersion and scattering

  3. Refraction, dispersion and internal reflection

  4. Dispersion, scattering and total internal reflection


Correct Option: C

At noon the sun appears white as

  1. light is least scattered.

  2. blue colour is scattered the most.

  3. red colour is scattered the most.

  4. all the colours of the white light are scattered away.


Correct Option: A

The colored light that refracts most while passing through a prism is

  1. Yellow

  2. violet

  3. blue

  4. red


Correct Option: B

The blue colour of the sky is due to

  1. Refraction of light

  2. Diffraction of light

  3. Dispersion of light

  4. Scattering of light


Correct Option: D

The sky appears blue because some of the blue component of sunlight is scattered by

  1. Gas molecules in air

  2. Dust particles in air

  3. Water droplets suspended in air

  4. Soot particles in air


Correct Option: C

Which of the following is NOT caused by the atmospheric refraction of light

  1. Twinkling of stars at night

  2. Sun apparently higher in sky than it usually is

  3. Sun appearing red at sunset

  4. None of these


Correct Option: C

Due to atmospheric refraction of sunlight, the time from sunrise to sunset is lengthened by

  1. 2 minutes

  2. 4 minutes

  3. 20 minutes

  4. 40 minutes


Correct Option: B

The atmospheric refraction of light causes twinkling of

  1. Planets

  2. Stars

  3. Satellites

  4. None of these


Correct Option: B

We can see the sun before the actual sunrise by about

  1. 2 minutes

  2. 30 minutes

  3. 2 hours

  4. 20 minutes


Correct Option: A

Danger signals are red in colour. These can be easily seen from a distance because among all other colours,the red light

  1. is scattered the most by smoke or fog.

  2. is scattered the least by smoke or fog.

  3. is absorbed the most by smoke or fog.

  4. moves fastest in air.


Correct Option: B

The coloured light having maximum speed in glass prism is

  1. Red

  2. Blue

  3. Yellow

  4. Green


Correct Option: A

The colour of white light which is deviated the maximum on passing through a glass prism is

  1. Red

  2. Blue

  3. Yellow

  4. Green


Correct Option: B

Which of the following colour of white light has the least wavelength?

  1. Red

  2. Blue

  3. Orange

  4. Violet


Correct Option: D
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