Human Eye and C...

A prism splits a beam of white light into seven colours because different colours have different

The sky would appear red instead of blue, if:

Which of the following is used to correct the eye defect - presbyopia?

Que - Identify the correct statement: , 

Iris controls the size of the pupil. 

Pupil controls the size of the iris. 

The eye lens forms an inverted real image of the object.

Pupil controls the amount of light entering the eye.

An optician used concave lens to correct the defect of eye so that the customer can see clearly. Which defect of vision could it be?

By how much time is the sunset delayed due to atmospheric refraction?

A person is suffering from both defects of vision - myopia and hypermetropia. Which type of lens should he use?

The phenomenon of splitting of white light into its constituent seven colours on passing through a glass prism is known as

One cannot see through fog because :

Which of the following ways is used to correct the eye defect - myopia?