The velocity of light in air is 3*10^i m/s. find the velocity and wavelength of sodium light in glass of refractive index 1.658
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first find velocity of light in glass by using
v=(c/n) and get velocity.this will be used to calculate wavelength if we know frequency.
now get frequency.
use Beauty of electromagnetic wave,is that it doesn't change it's frequency while travelling in any medium, but velocity and wavelength changes.
use this fact. get frequency by sending it in air and use it for glass case.
v=(c/n) and get velocity.this will be used to calculate wavelength if we know frequency.
now get frequency.
use Beauty of electromagnetic wave,is that it doesn't change it's frequency while travelling in any medium, but velocity and wavelength changes.
use this fact. get frequency by sending it in air and use it for glass case.
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