Important Questions on Refraction and Dispersion of Light
Which lens is used to protect the myopia of the eye? 
Differentiate between curable and incurable blindness. What is the name of a rectangular array or box in which each symbol in Braille is placed and represented through dots? When a ray of light moves from an optically rarer medium to an optically denser medium, the speed of light The phenomenon in which white light splits into seven colours whenever it passes through a prism is called: Through which of the following the ray of light goes undeviated but suffers a little displacement? If the object is placed at 2F, then its image forms: Which one of the following prevents the front part of the eye from collapsing due to change in atmosphere? 
