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A laser beam passes through a slit that is 2000 nm wide. In the interference pattern created on a distant screen, the angular position of the two...

A laser beam passes through a slit that is 2000 nm wide. In the interference pattern created on a distant screen, the angular position of the two first-order dark fringes is 12.0 ∘. The beam then is shone on a soap film (nfilm = 1.40) floating on water (nwater = 1.33).

Part A

What is the minimum film thickness that causes light reflected at normal incidence from the air-film interface to cancel light reflected at normal incidence from the film-water interface?

Express your answer with the appropriate units.



t = 74.6m

incorrect

Top Answer

The minimum film... View the full answer

1 comment
  • answer 149 nm
    • mbsbcmpo
    • May 11, 2018 at 8:02pm

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