When white light shines on a thin film of soap, light is reflected from back surface of the film only.
Doppler Shift is the change in frequency of sound based on the observer’s point of view.
When white light falls on a thin film of soap, light gets reflected and refracted inside the soap. This results in refraction of the reflected light rays.
When white light shines on a thin film of soap, light is reflected from the back surface of the film only.
Learn more about doppler shift.
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