Question

1)State the basic cause of refraction of light.2)Define the term 'absolute refractive index'.

Answer 1

Refraction is caused by light passing from one medium to another (from air to water, for example) and experiencing a change in ... A: The basic properties of light are its wavelength, frequency, energy and speed. so when light travels from rarer to dense it bends towards normal. when travels from denser to rarer it bends way from normal.

absolute refractive index= it is the ratio between the speed os light in vacuum to the speed of light in respective medium.

Answer 2

Answer:

2. The ratio of the speed of light in vacuum ( or free space) to the speed of light in the given medium is called absolute refractive index (μm).