UPSC CAPF Assistant Commandant Model Paper 1

Question : 49 of 125

Marks: +1, -0

Which of the following statement is TRUE?

The earth's atmosphere is a homogeneous mixture of minute particles.
The particles of larger size present in the atmosphere scatter light of longer wavelength.
In the case of Tyndall effect observed when sunlight passes through a canopy of dense forest, the tiny molecules of air scatter light.
The sun is visible 2 min after the actual sunrise, and is not visible about 2 min before the actual sunset.

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