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How many colours are present in the white light?

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Important Questions on Light

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Science>Physics>Light>Sunlight : White or Coloured
During sunset or sunrise the sun appears reddish because:
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Science>Physics>Light>Sunlight : White or Coloured
Write the material that you used to find out the value of refractive index of a prism. What is the necessity of the graph in this experiment?
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Science>Physics>Light>Sunlight : White or Coloured
The splitting of white light into 7colours is called
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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
What happens if dispersion and scattering of light do not occur?
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Science>Physics>Light>Sunlight : White or Coloured
Explain the formation of rainbow.
HARD
Science>Physics>Light>Sunlight : White or Coloured
What is the reason for the blue colour of the sky? How do you appreciate the role of molecules in the atmosphere in this regard?
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Science>Physics>Light>Sunlight : White or Coloured

In the given figure, what is the angle of prism?

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Science>Physics>Light>Sunlight : White or Coloured
The graph between angle of deviation δ and angle of incidence i for a triangular prism is represented by :
MEDIUM
Science>Physics>Light>Sunlight : White or Coloured
A suspension is transparent to light.
MEDIUM
Science>Physics>Light>Sunlight : White or Coloured
With the help of a diagram, show the dispersion of white light of a prism.
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Science>Physics>Light>Sunlight : White or Coloured
What is a dispersion of light? 
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Science>Physics>Light>Sunlight : White or Coloured

Give two similarities between a raindrop and a prism.

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Science>Physics>Light>Sunlight : White or Coloured
Light of which colour—red or violet, travels faster?
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Science>Physics>Light>Sunlight : White or Coloured
Red light splits into seven colors after passing through a prism.
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Science>Physics>Light>Sunlight : White or Coloured
What is the splitting of white light into seven colours called?
MEDIUM
Science>Physics>Light>Sunlight : White or Coloured
Define the term 'spectrum'.
MEDIUM
Science>Physics>Light>Sunlight : White or Coloured
White sunlight is not dispersed in air. Why?
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Science>Physics>Light>Sunlight : White or Coloured
Define spectrum.
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Science>Physics>Light>Sunlight : White or Coloured
What happens when a beam of sunlight is passed through a glass prism? What is spectrum?