Problem: 1. When white light shines on a thin film of soap, light is reflected from the A) back surface of the film only. B) both the front and back surfaces of the film. C) the front surface of the film only. 2. This results in A) refraction of the reflected light rays. B) interference between the reflected light rays. C) a Doppler shift in the frequency of the reflected light. 3. Colors are seen in the soap film because certain wavelengths of the reflected light areA) refracted at different angles. B) canceled due to destructive interference. C) absorbed by pigments in the soap.

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The interference is between the light reflected from different surfaces of a thin film. 

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Problem Details

1. When white light shines on a thin film of soap, light is reflected from the 



A) back surface of the film only. 

B) both the front and back surfaces of the film. 

C) the front surface of the film only. 


2. This results in 

A) refraction of the reflected light rays. 

B) interference between the reflected light rays. 

C) a Doppler shift in the frequency of the reflected light. 


3. Colors are seen in the soap film because certain wavelengths of the reflected light are

A) refracted at different angles. 

B) canceled due to destructive interference. 

C) absorbed by pigments in the soap.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the !! Thin-Film Interference concept. If you need more !! Thin-Film Interference practice, you can also practice !! Thin-Film Interference practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Santavicca's class at UNF.