Two identical point sources are 4.5 cm apart, in phase and vibrating at a frequency of 10 Hz. They produce an interference pattern. At the point of the first nodal line 4.5 cm from one source and 5.0 cm from the other. a) Determine the wavelength. b) Determine the speed of the waves.

Two identical point sources are 4.5 cm apart, in phase and vibrating at a frequency of 10 Hz. They produce an interference pattern. At the point of the first nodal line 4.5 cm from one source and 5.0 cm from the other. a) Determine the wavelength. b) Determine the speed of the waves.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter27: Wave Optics

Section: Chapter Questions

Problem 19P

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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

Two identical point sources are 4.5 cm apart, in phase and vibrating at a frequency
of 10 Hz. They produce an interference pattern. At the point of the first nodal line 4.5 cm
from one source and 5.0 cm from the other.
a) Determine the wavelength.
b) Determine the speed of the waves.

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