EASY
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Rayleigh scattering and Mie scattering are the types of ________?

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Important Questions on Ray Optics and Optical Instruments

MEDIUM
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.
EASY
What phenomenon of light causes the blue colour of the sky and the reddening of the sun at sunrise or sunset?
EASY
The sky as seen from the surface of the moon appears dark because,
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What would be the colour of the sky if the earth had no atmosphere?
EASY
Total internal reflection may be observed if
MEDIUM

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

EASY
During sunset or sunrise the sun appears reddish because:
EASY
According to Rayleigh scattering law,
EASY
In the case of secondary rainbow _____ colour is at the top.
EASY
In the formation of primary rainbow, the sunlight rays emerge at minimum deviation from rain-drop after
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The average angle of inclination of the primary rainbow with the axis is
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In the formation of a rainbow, light from the sun on water droplets undergoes
EASY
Which colour suffers least deviation on passing through a prism?
EASY
The straight line joining the sun and the observer along which centre of both the primary and secondary rainbow lies is called