In Young's double - slit experiment, the seventh dark fringe is located 0.025 m to the side of the central bright fringe on a flat screen, which is 1.1 m away from the slits. The separation between the slits is 1.4 x 10-4 m. What is the wavelength of the light being used?

In Young's double - slit experiment, the seventh dark fringe is located 0.025 m to the side of the central bright fringe on a flat screen, which is 1.1 m away from the slits. The separation between the slits is 1.4 x 10-4 m. What is the wavelength of the light being used?

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter3: Interference

Section: Chapter Questions

Problem 31P: In a double-slit experiment, the fifth maximum is 2.8 cm from the central maximum on a screen that...

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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

3. In Young's double - slit experiment, the
seventh dark fringe is located 0.025 m to the
side of the central bright fringe on a flat
screen, which is 1.1 m away from the slits. The
separation between the slits is 1.4 x 104 m.
What is the wavelength of the light being
used?

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