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Which is the complementary colour of blue colour?

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Important Questions on Spectrum

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Science>Physics>Spectrum>Scattering of Light
What would be the colour of the sky if the earth had no atmosphere?
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Science>Physics>Spectrum>Scattering of Light
The smoke from a fire looks white. Which of the following statements is true?
(1) Molecules of the smoke are bigger than the wavelength of light. 
(2) Molecules of the smoke are smaller than the wavelength of light.
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Science>Physics>Spectrum>Scattering of Light
Define scattering.
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Science>Physics>Spectrum>Scattering of Light
The blue colour of sky is due to:
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Science>Physics>Spectrum>Scattering of Light
The sky as seen from the surface of the moon appears dark because,
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Science>Physics>Spectrum>Scattering of Light

Stokes and anti stokes lines observed in Raman scattering is due to _______ of light.

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Science>Physics>Spectrum>Scattering of Light
What phenomenon of light causes the blue colour of the sky and the reddening of the sun at sunrise or sunset?
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Science>Physics>Spectrum>Scattering of Light
Total internal reflection may be observed if
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Science>Physics>Spectrum>Scattering of Light
During sunset or sunrise the sun appears reddish because:
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Science>Physics>Spectrum>Scattering of Light
The sky looks blue on a clear, sunny day because of
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Science>Physics>Spectrum>Scattering of Light
The sky is blue because
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Science>Physics>Spectrum>Scattering of Light
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:
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Science>Physics>Spectrum>Scattering of Light
The blue colour of the sky is due to:
MEDIUM
Science>Physics>Spectrum>Scattering of Light
In fog, photographs of the objects taken with infrared radiations are more clear than those obtained during visible light because
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Science>Physics>Spectrum>Scattering of Light
The sky generally appears blue, because the colour which scatters closest to the eye is:
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Science>Physics>Spectrum>Scattering of Light
The sky appears black when seen from the moon (or outer space) because _____ of light is not prominent at such height due to the absence of particles.
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Science>Physics>Spectrum>Scattering of Light
Blue colour of sky is due to :
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Science>Physics>Spectrum>Scattering of Light
The sky looks blue on a clear, sunny day because of scattering of blue component of the white sunlight by _____ present in the atmosphere.
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Science>Physics>Spectrum>Scattering of Light
In white light of sun, maximum scattering by the air molecules present in the earth’s atmosphere is for:
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Science>Physics>Spectrum>Scattering of Light
For which colour, refractive index of glass is maximum?