You set up four two slit interference experiments (A-D), each using an identical laser as the light source. Each experiment uses a different mask containing two slits. The separation of the slits for each mask is given below. Rank the four experiments by the angle to the first interference maximum from least to great- est. A) 1 um B) 10 um C) 1 mm D) 0.1 mm

You set up four two slit interference experiments (A-D), each using an identical laser as the light source. Each experiment uses a different mask containing two slits. The separation of the slits for each mask is given below. Rank the four experiments by the angle to the first interference maximum from least to great- est. A) 1 um B) 10 um C) 1 mm D) 0.1 mm

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 89AP: Monochromatic light of wavelength 530 nm passes through a horizontal single slit of width 1.5 m in...

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Concept explainers

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.

Question

You set up four two slit interference experiments (A-D), each using an identical laser as the light
source. Each experiment uses a different mask containing two slits. The separation of the slits for
each mask is given below.
Rank the four experiments by the angle to the first interference maximum from least to great-
est.
A) 1 um
B) 10 um
C) 1 mm
D) 0.1 mm

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Two slits of width 2 m, each in an opaque material, are separated by a center-to-center distance of 6 m. A monochromatic light of wavelength 450 nm is incident on the double-slit. One finds a combined interference and diffraction pattern on the screen. (a) How many peaks of the interference will be observed in the central maximum of the diffraction pattern? (b) How many peaks of the interference will be observed if the slit width is doubled while keeping the distance between the slits same? (c) How many peaks of interference will be observed if the slits are separated by twice the distance, that is, 12 m, while keeping the widths of the slits same? (d) What will happen in (a) if instead of 450-nm light another light of wavelength 680 nm is used? (e) What is the value of the ratio of the intensity of the central peak to the intensity of the next bright peak in (a)? (f) Does this ratio depend on the wavelength of the light? (g) Does this ratio depend on the width or separation of the slits?
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Microwaves of wavelength 10.0 mm fall normally on a metal plate that contains a slit 25 mm wide. (a) Where are the first minima of the diffraction pattern? (b) Would there be minima if the wavelength were 30.0 mm?
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A beam of monochromatic light is incident on a single slit of width 0.630 mm. A diffraction pattern forms on a wall 1.35 m beyond the slit. The distance between the positions of zero intensity on both sides of the central maximum is 2.10 mm. Calculate the wavelength of the light. .049 Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. nm
What is the condition of a construction interference (bright fringe) in two slit experiment? A. The path difference between two waves from both the slits should be an integral multiple of wavelength (i.e., 0, ±4, ±24, ±3A..). B. The path difference between two waves from both the slits should be half-odd integral multiple of wavelength (e.g., ±N2, ± 3/2, + 5N2..). C. There should be no path difference at all for constructive interference to form. D. The slit separation should be very small.
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B03