A light beam has a wavelength of 330 nm in a material of refractive index 1.50. In a material of refractive index 2.50, its wavelength will be In a material of refractive index 2.50, its wavelength will be: a. 495 nm .
b. 330 nm .
c. 220 nm .
d. 198 nm .
e. 132 nm .

The wavelength of the ligt beam in a material of refractive index 2.50 is 198 mm

d. 198 mm

Explanation:

Refractive index is given by;

where;

is the wavelength of the light beam in vacuum

is the wavelength of the beam in a material

Therefore, the wavelength of the ligt beam in a material of refractive index 2.50 is 198 mm.

d. 198 mm