A glass surface is coated by an oil film of uniform thickness 1.00 x 104 cm. The index of refraction of the oil is 1.25 and that of the glass is 1.50. Some of the wavelengths in visible region (400 nm – 490 nm) are completely transmitted by the oil film under normal incidence. nx10-6 One of the wavelength transmitted completely in visible region is m. Find the value 11 of n.

A glass surface is coated by an oil film of uniform thickness 1.00 x 104 cm. The index of refraction of the oil is 1.25 and that of the glass is 1.50. Some of the wavelengths in visible region (400 nm – 490 nm) are completely transmitted by the oil film under normal incidence. nx10-6 One of the wavelength transmitted completely in visible region is m. Find the value 11 of n.