A mixture of yellow light of wavelength 580nm and blue light of wavelength 450nm is incident normally on an air - Physics - Wave Optics

Question

A mixture of yellow light of wavelength 580nm and blue light of
wavelength 450nm is incident normally on an air film of thickness 2
9x10^2 nm The colour of the first order of reflected light is A Red
B Blue C Violet D Yellow

Divyanshu Sharma · Accepted Answer

A mixture of yellow light of wavelength 580nm and blue light of wavelength 450nm is incident normally on an air film of thickness 2.9x10^2 nm. The colour of the first order of reflected light is A. Red B. Blue C. Violet D. Yellow