Splitting up of white light into seven constituent colours is called dispersion. When white light is passed through a glass prism it splits into its spectrum of colours (in order violet, indigo, blue, green, yellow, orange and red) and this process of white light splitting into its constituent colours is termed as dispersion. Note: Rainbow is the phenomenon due to dispersion of light.

EASY

Earn 100

Write the name of colours of the sun rays.

Important Questions on Light

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Science>Physics>Light>Sunlight - White or Coloured

When white light is incident on a blue pigment, which colours are reflected?

MEDIUM

Science>Physics>Light>Sunlight - White or Coloured

While performing an experiment of dispersion of white light through a prism, four students represented the dispersion pattern as shown below. Identify the correct representation:

EASY

Science>Physics>Light>Sunlight - White or Coloured

The danger signals installed at the top of tall buildings are red. These can be easily seen from a distance because among all other colours, the red light

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Science>Physics>Light>Sunlight - White or Coloured

The coloured substances which are used as a paint are known as pigments. In order to obtain various pigments, the subtractive method is used for mixing the pigments. Which of the following colour is not absorbed by yellow and blue pigments?

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Science>Physics>Light>Sunlight - White or Coloured

When white light passes through the prism, colour which deviates the least is:

EASY

Science>Physics>Light>Sunlight - White or Coloured

Which day is celebrated as science day in India?

HARD

Science>Physics>Light>Sunlight - White or Coloured

What do you understand by the terms (a) Dispersion, (b) Spectrum.

EASY

Science>Physics>Light>Sunlight - White or Coloured

Define the following terms: