EVERYDAY SCIENCE

Detailed explanation-1: -This change of direction is called refraction. When light enters a more dense substance (higher refractive index), it ‘bends’ more towards the normal line. The amount of bending depends on two things: Change in speed – if a substance causes the light to speed up or slow down more, it will refract (bend) more.

Detailed explanation-2: -When light rays travel from one medium to another, the direction of propagation, as well as the speed of the light rays, alter. The bending of the path of light rays when it travels from one medium to another is known as refraction of light.

Detailed explanation-3: -Reflection can simply be defined as the bouncing back of light when it strikes the medium on a plane. Refraction can be defined as the process of the shift of light when it passes through a medium leading to the bending of light. The light entering the medium returns to the same medium.

Detailed explanation-4: -Refraction is the change in direction of waves that occurs when waves travel from one medium to another. Refraction is always accompanied by a wavelength and speed change. Diffraction is the bending of waves around obstacles and openings. The amount of diffraction increases with increasing wavelength.