A source emits monochromatic light of wavelength 495 nm in air. when the light passes through a liquid, its wavelength reduces to 434 nm The liquid's index of refraction is 1.14
How to find liquid's index of refraction ?
n=wave length of light in vaccum/wavelength of material
Monochromatic light of wavelength 495 nm in air
wavelength 434 nm.
n=495/434
Refractive index of liquid is 1.14
- The refractive index is a typical occurrence that is seen practically every day.
- When a light ray passes through one medium and then into another, it shifts its direction. It occurs because the speed of light varies depending on the medium. Light travels at a speed of 2.98X 108 metres per second in air and 3X 108 metres per second in a vacuum.
- The ratio of the speed of light in a vacuum to the speed of light in the medium is known as the refractive index or index of refraction. From one media to another, the refractive index value changes. In other words, the refractive index measures how much a light beam bends when it passes through one medium and then into another.
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