The speed of light in vacuum is ________.

Light can exhibit both wave and ______ character.

Light has _____ duality.

A particle of light called a corpuscle by Newton is now called a ______.

The bending of ruler partly immersed in water is due to _____ of light.

The more the optically dense a medium is, the _____ is the velocity of light in that medium.

The refractive index of diamond is _____ than that of glass.

Refractive index of air is taken as ______.

The concept of _____ is used in cutting the facets of diamond.

When white light is dispersed by a prism, _____ colour is deviated least.

Total reflecting prisms are used in______.

The refractive index of the prism for _____ colour is the largest.

A band of different colours is called a ______.

For normal vision the maximum distance of distinct vision is ______.

A ray of light is a stream of ______.

In the total internal reflecting prism _____ of light is reflected.

The velocity of light in a medium depends upon the _______ density of that medium.

When a ray of light passes from water to air, the velocity of light _____.

When the angle of incidence is equal to the critical angles, the angle of refraction is _______.

The energy E released from an atom is given by _____.

The angle of incidence is equal to the angle of _____ for a ray passing through a glass slab with parallel sides.

The wavelength of visible light lies between ________.

The primary light colours are ______ , red and green.

The scientist who measured the velocity of light in air

c = 3×10⁸ ms^-1 was _______.