Water waves having parallel crests 4.5 cm apart passthrough two openings 7.5 cm apart in a board. At a point3.0 m beyond the board, at what angle relative to the“straight-through” direction would there be little or nowave action?

Water waves having parallel crests 4.5 cm apart passthrough two openings 7.5 cm apart in a board. At a point3.0 m beyond the board, at what angle relative to the“straight-through” direction would there be little or nowave action?

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 28P: A water break at the entrance to a harbor consists of a rock barrier with a 50.0-m-wide opening....

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Concept explainers

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.

Question

Water waves having parallel crests 4.5 cm apart pass
through two openings 7.5 cm apart in a board. At a point
3.0 m beyond the board, at what angle relative to the
“straight-through” direction would there be little or no
wave action?

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