Science : Ch 11 – The Human Eye and the Colourful World

A clear sky appears blue, because:

Which of the following statements is correct regarding the propagation of light of diferent colours of white light in air?

The bluish colour of water in deep sea is due to:

The absorption of light by a molecule depends on the

Ankit remarked that he has seen wavering of objects when seen through a stream of hot air rising above a tandoor or a fire. He said that the air just above the fire becomes hotter than the air further higher up. He further said that this wavering can also be seen in the earth’s atmosphere as the earth’s atmosphere is not evenly distributed and several observations can be explained on the basis of this phenomenon,name the phenomeoneon

Arjun remarked that he has seen wavering of objects when seen through a stream of hot air rising above a tandoor or a fire. He said that the air just above the fire becomes hotter than the air further higher up. He further said that this wavering can also be seen in the earth’s atmosphere as the earth’s atmosphere is not evenly distributed ,Name two observations which can be explained by the above phenomenon.

Why don’t planets twinkle?

When sunlight passes through a canopy of a dense forest, tiny water droplets in the water scatter light.This is an example of

Effect produced by scattering of light by the atmosphere.

The defect the eye cannot focus objects both horizontally and vertically at the same time

Myopia can be corrected by using

Rainbow is caused due to

The SI unit of Power of a lens is

The colour of scattered light depends on the

The colour of the clear sky blue due to