Question

Light of wavelength 2400 x 10
-10m in air will become light of wavelength in glass (μ= 1.5)equal to

Answer 1

1 x 10^-10 m = 1 armstrong
therefore,2400 x 10^-10 = 2400 A
You might know about this given formula

refractive index of medium x = wavelength of light in air/ wavelength of light in medium x
1.5=2400A/ wavelength of light in glass

therefore, wavelength of light in glass =1600A