Consider a laser light illuminating a vertical thin film of polystyrene (n=1.55) of thickness t= 85 nm The thin film is surrounded by air. What should the wavelength of the laser be to observe a bright interference lambda=403 nm lambda=527 nm O lambda=566 nm lambda= 75 nm

Consider a laser light illuminating a vertical thin film of polystyrene (n=1.55) of thickness t= 85 nm The thin film is surrounded by air. What should the wavelength of the laser be to observe a bright interference lambda=403 nm lambda=527 nm O lambda=566 nm lambda= 75 nm

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 75P: The structure of the NaCl crystal forms reflecting planes 0.541 nm apart. What is the smallest...

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Concept explainers

Diffraction of light

In physics, the term diffraction is defined as the bending of light around the corners of the obstacle. As a light ray passes by an aperture, it bends around the edges or through slits, it spreads out through a narrow opening. The diffracted light will produce fringes of bright and dark or colored bands which are labeled as a diffraction pattern.

Question

Consider a laser light illuminating a vertical thin film of polystyrene (n=1.55) of thickness t= 85
nm
The thin film is surrounded by air.
What should the wavelength of the laser be to observe a bright interference
O lambda=403 nm
O lambda=527 nm
lambda=566 nm
lambda= 75 nm
lambda=371 nm

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