Question

Double-Slit Interference

A pair of slits, separated by 0.120 mm, is illuminated by light of wavelength 643 nm. An interference pattern is observed on a screen 112 cm from the slits. Consider a point on the screen located at y = 2.10 cm from the central maximum of the pattern…

a) What is the path difference (in nm) for the two slits at location y?

b) What is the path difference in waves?

c) Is this a maximum, a minimum or an intermediate condition?

d) Starting from y = 1.80 cm and moving away from the center of the pattern, what is the next value of y for which there is a maximum, and which maximum is it?

Answer #1

A pair of slits, separated by 0.1 mm, is illuminated by light
having a wavelength of 500 nm. An interference pattern is observed
on a screen 1.20 m from the slits. (a) Draw the diagram of the
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interference fringes on the screen? (b) What are the angles of the
first and second order fringes with respect to the zeroth order
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A pair of narrow, parallel slits separated by 0.300 mm is
illuminated by green light (? = 546.1 nm). The interference pattern
is observed on a screen 1.10 m away from the plane of the parallel
slits.
(a) Calculate the distance from the central maximum to the first
bright region on either side of the central maximum.
________________mm
(b) Calculate the distance between the first and second dark
bands in the interference pattern.
________________mm

In a Young's double-slit experiment, a set of parallel slits
with a separation of 0.104 mm is illuminated by
light having a wavelength of 566 nm and the
interference pattern observed on a screen 3.50 m
from the slits.
(a) What is the difference in path lengths from the two slits to
the location of a fifth order bright fringe on the
screen?
_________________________ μm
(b) What is the difference in path lengths from the two slits to
the location...

In a Young's double-slit experiment, a set of parallel slits
with a separation of 0.150 mm is illuminated by light having a
wavelength of 600 nm and the interference pattern observed on a
screen 4.50 m from the slits.
(a) What is the difference in path lengths from the two slits to
the location of a fifth order bright fringe on the screen? μm
(b) What is the difference in path lengths from the two slits to
the location of...

Laser light of an unknown wavelength falls incident on a pair of
slits separated by 25.0 µm. This produces an interference pattern
on a screen 1.80 m away with the first-order bright fringe being
39.7 mm from the center of the central maximum. What is the
wavelength of the laser light?

A pair of narrow and parallel slits is separated by a distance
(d) of 0.750mm and are illuminated by a green light with a
wavelength of 562nm. The interference pattern is seen on a viewing
screen that is L = 1.80 m away from the plane of the parallel
slits.
a) Find the distance from the center of the central maximum to
the center of the first dark fringe
b) calculate the distance from the center of the central maximum...

Light of wavelength 532 nm illuminates a pair of slits separated
by a distance of d= 0.42 mm. An interference pattern is observed on
a screen placed a distance L away (L>>d). You may use the
small angle approximation for this problem. What is the distance L
if the width of the central bright spot of the interference pattern
is delta(y) = 1.9 cm? The answer is supposed to be 15 m but i cant
figure out how to get...

A double-slit interference pattern is created by two narrow
slits spaced 0.21 mm apart. The distance between the first and the
fifth minimum on a screen 61 cm behind the slits is 6.2 mm. a. Draw
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the central maximum, first minimum, fifth minimum, and the distance
given in the problem declaration. b. What is the wavelength (in nm)
of the light used in this experiment?

Two narrow slits are illuminated by a laser with a wavelength of
578 nm. The interference pattern on a screen located x = 4.50 m
away shows that the third-order bright fringe is located y = 9.10
cm away from the central bright fringe. Calculate the distance
between the two slits.
First you have to calculate the angle of the maximum. Then you
can use the formula for bright fringes of double slits.
Incorrect.
Tries 2/20
Previous Tries
The screen...

Two narrow slits are used to produce a double-slit interference
pattern with monochromatic light. The slits are separated by 8 mm,
and the interference pattern is projected onto a screen 7 m away
from the slits. The central bright fringe is at a certain spot on
the screen. Using a ruler with one end placed at the central
fringe, you move along the ruler passing by two more bright fringes
and find that the next bright fringe is 23.5 mm...

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