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13) In a soap film with a refractive index of 1.333, a 450 nm light undergoes constructive interference. Estimate the thickness of the film.

13) In a soap film with a refractive index of 1.333, a 450 nm light undergoes constructive interference. Estimate the thickness of the film.

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13) In a soap film with a refractive index of 1.333, a 450 nm light undergoes constructive interference. Estimate the thickness of the film.
Transcribed Image Text:13) In a soap film with a refractive index of 1.333, a 450 nm light undergoes constructive interference. Estimate the thickness of the film.
Expert Solution
Concept and Principle:
  • Interference takes place when two waves meet at a point. The final intensity might increase or decrease based on the path difference.

 

  • Constructive interference is when the intensity is increased. Destructive interference takes place when intensity reduces.

 

  • Condition for constructive interference for a film of given refractive index and thickness is given by,

2nd=(m+12)λ

Here n is the refractive index of the film, d is the thickness, m is the order, and λ is the wavelength of the source.

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