Find the minimum thickness of a soap film (n = 1.333) in which 550-nm light will undergo constructive interference.
Find the minimum thickness of a soap film (n = 1.333) in which 550-nm light will undergo constructive interference.
Related questions
Question
Transcribed Image Text:Find the minimum thickness of a soap film (n = 1.333) in
which 550-nm light will undergo constructive interference.
Expert Solution
Concept and Principle:
- Interference takes place when two light waves meet. Depending on the path difference the net intensity will decrease or increase.
- When the intensity is reduced it is called destructive interference and when the intensity is increased it is called constructive interference.
- Condition for constructive interference for a film of given refractive index and thickness is given by,
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.
Step by step
Solved in 3 steps
