physics

A small boy blows a big soap bullet at a birthday party where the room is illuminated with yellow light of wavelength 600 nm.

a) What is the colour of the soap bubble? Give reasons for your answer.
b) Estimate the thickness of the soap bubble. [Refractive index of soap bubble solution= 1.40]
c) If the room is illuminated with sunlight, explain briefly what will happen to the appearance of the soap bubble?

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