Question

0 (3) YouTube x O PHYS 283 Sector × Dsch-20171,283 (1 D 20171-hw2Q (1).p × e My Question ls Tr x-LEn Son-Google. X Adsz doküman- θ C O file:///C/Users/hp/Downloads/201 71.hw20%20(1).pdf 20171_hw2Q (1).pdf A: reflected from the upper surface Note: Light is incident normally (6-0°) 6-001 B: reflected from the lower surface but to show the transmissions and the reflections clearly it is drawn as seen in the figure. Monochromatic beam of light(λ = 0.8 μm) is incident normally on a thin film of refractive index n=3 in air. Consider the two-beam interference only. (a) Find the optical path difference between the two waves; A (reflected from the upper surface) and B (reflected from the lower surface) in terms of thickness t of the film. (b)Find the minimum thickness t of the film for which the upper surface is seen almost dark. (c) Use thickness found in the previous part. If we use white light instead of monochromatic light, which wavelength(s) will be seen bright at the surface? Also, name the color(s) 22:52 14.11.2017

my question is this. and I will be happy if you can write the answer clearly and step by step. thanks:)

Answer 1