Calculate the width the interference fringe in the middle of the screen between two slits given the wavelength of the incident light is 587 nm and the distance between the slits is 0.017 mm. Take the distance between the slits and the screed D=1 m. Provide your answer in millimetres (mm).

Calculate the width the interference fringe in the middle of the screen between two slits given the wavelength of the incident light is 587 nm and the distance between the slits is 0.017 mm. Take the distance between the slits and the screed D=1 m. Provide your answer in millimetres (mm).

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter3: Interference

Section: Chapter Questions

Problem 38P: What is the angular width of the central fringe of the interference pattern of (a) 20 slits...

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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.

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What is the angular width of the central fringe of the interference pattern of (a) 20 slits separated by d=2.0103 mm? (b) 50 slits with the same separation? Assume that =600 nm.
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A diffraction grating has 2000 lines per centimeter. At what angle will the first-order maximum be for 520-nmwavelength green light?
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As an example of diffraction by apertures of everyday dimensions, consider a doorway of width 1.0 m. (a) What is the angular position of the first minimum in the diffraction pattern of 600-nm light? (b) Repeat this calculation for a musical note of frequency 440 Hz (A above middle C). Take the speed of sound to be 343 m/s.