Multiple Choice Questions (MCQs)

Rainbow occurs due to :

Light entering the eye, gets the most refraction at the 

A student sitting on the last bench can read the letters written on the blackboard, but cannot read the book. The correct statement about him is :

At sunrise or sunset, sun and surrounding sky appear red due to:

Twinkling of stars takes place due to atmosphere : 

At noon, the sun appears white because -

The clear sky appears blue because

Signals and danger signs are mostly red because red light is scattered :