Question

define absolute refractive index of a medium. calculaate refractive index of glass

Answer 1

Absolute refractive index is a number indicating the speed of light in a given medium as either the ratio of the speed of light in a vacuum to that in the given medium (absolute index of refraction) or the ratio of the speed of light in a specified medium to that in the given medium (relative index of refraction) Symbol: n.
Refractive index of a glass depends upon the refractive index of the surroundings (when you consider the light ray passing from the surrounding into the medium), optical density, wavelength of the light and temperature.
Refractive index of a typical crown glass is 1.52

Answer 2

Step 1: Work out the sine of angle i. sin 55 = 0.819.Step 2: Work out the sine of angle r. sin 33 = 0.545.Step 3: Divide sin i by sin r. refractive index = sin i ÷ sin r. refractive index = 0.819 ÷ 0.545 = 1.50. A refractive index of 1.5 will slow down light and bend it toward the normal inside the glass block. A number indicating the speed of light in a given medium as either the ratio of the speed of light in a vacuum to that in the given medium (absolute index of refraction) or the ratio of the speed of light in a specified medium to that in the given medium (relative index of refraction) Symbol: n.