1. Sound waves can diffract through doorways so that listeners can hear noises from another roomwithout having to be directly in front of the door. For the wave to diffract, the door must be at anappropriate scale. Around what width should a door be to diffract a sound wave of f = 240 Hz?Remember that the speed of sound in air is v = 343 m/s.Approximate door width:

Answered: Sound waves can diffract through do…

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Sound waves can diffract through do without having to be directly in front

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter34: The Nature Of Light And The Principles Of Ray Optics

Section: Chapter Questions

Problem 12P

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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

1. Sound waves can diffract through doorways so that listeners can hear noises from another room
without having to be directly in front of the door. For the wave to diffract, the door must be at an
appropriate scale. Around what width should a door be to diffract a sound wave of f = 240 Hz?
Remember that the speed of sound in air is v = 343 m/s.
Approximate door width:

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