Question

Monochromatic light of frequency 5 into 10 to the power 14 hertz traveling and vacuum enters a medium of refractive index 1.5 its wavelength in the medium is

Answer 1

Velocity of light = 3× 10^8 m/s

Wavelength 1 = 3×10^8m/s÷ 5×10^14m/s = 6000 angstrom.

N^2 ÷ n^1 = 6000 angstrom ÷ wavelength2= 1.5 ÷ 1 = 6000 angstrom ÷ wavelength2 = 4000 angstrom