Q35.1
Two sources S1 and S2 oscillating in phase emit sinusoidal waves.
Point P is 7.3 wavelengths from source S1 and 4.3 wavelengths
from source S2. As a result, at point P there is
A. constructive interference.
B. destructive interference.
C. constructive interference at certain times and destructive
interference at other times.
D. neither constructive nor destructive interference.
E. Not enough information is given to decide.
© 2016 Pearson Education, Inc.
A35.1
Two sources S1 and S2 oscillating in phase emit sinusoidal waves.
Point P is 7.3 wavelengths from source S1 and 4.3 wavelengths
from source S2. As a result, at point P there is
A. constructive interference.
B. destructive interference.
C. constructive interference at certain times and destructive
interference at other times.
D. neither constructive nor destructive interference.
E. Not enough information is given to decide.
© 2016 Pearson Education, Inc.
Q35.2
Two sources S1 and S2 oscillating in phase emit sinusoidal waves.
Point P is 7.3 wavelengths from source S1 and 4.6 wavelengths
from source S2. As a result, at point P there is
A. constructive interference.
B. destructive interference.
C. constructive interference at certain times and destructive
interference at other times.
D. neither constructive nor destructive interference.
E. Not enough information is given to decide.
© 2016 Pearson Education, Inc.
A35.2
Two sources S1 and S2 oscillating in phase emit sinusoidal waves.
Point P is 7.3 wavelengths from source S1 and 4.6 wavelengths
from source S2. As a result, at point P there is
A. constructive interference.
B. destructive interference.
C. constructive interference at certain times and destructive
interference at other times.
D. neither constructive nor destructive interference.
E. Not enough information is given to decide.
© 2016 Pearson Education, Inc.
Q35.3
In Young’s experiment, coherent light passing through two slits
(S1 and S2) produces a pattern of dark and bright areas on a
distant screen. If the wavelength of the light is increased, how
does the pattern change?
A. The bright areas move closer together.
B. The bright areas move farther apart.
C. The spacing between bright areas remains the same, but
the color changes.
D. In any of the above ways, depending on circumstances.
E. In none of the above ways.
© 2016 Pearson Education, Inc.
A35.3
In Young’s experiment, coherent light passing through two slits
(S1 and S2) produces a pattern of dark and bright areas on a
distant screen. If the wavelength of the light is increased, how
does the pattern change?
A. The bright areas move closer together.
B. The bright areas move farther apart.
C. The spacing between bright areas remains the same, but
the color changes.
D. In any of the above ways, depending on circumstances.
E. In none of the above ways.
© 2016 Pearson Education, Inc.
Q35.4
In Young’s experiment, coherent light passing through two slits
(S1 and S2) produces a pattern of dark and bright areas on a
distant screen. What is the difference between the distance from
S1 to the m = +3 bright area and the distance from S2 to the
m = +3 bright area?
A. six wavelengths
B. three wavelengths
C. three half-wavelengths
D. three quarter-wavelengths
E. Not enough information is given to decide.
© 2016 Pearson Education, Inc.
A35.4
In Young’s experiment, coherent light passing through two slits
(S1 and S2) produces a pattern of dark and bright areas on a
distant screen. What is the difference between the distance from
S1 to the m = +3 bright area and the distance from S2 to the
m = +3 bright area?
A. six wavelengths
B. three wavelengths
C. three half-wavelengths
D. three quarter-wavelengths
E. Not enough information is given to decide.
© 2016 Pearson Education, Inc.
Q35.5
Two radio antennas radiating in phase are located at points A and
B, which are 6 wavelengths apart. A radio receiver is moved along
a line from point B to point C. At what distances from point B will
the receiver detect an intensity maximum?
A
B
D. both A and B
E. all of A, B, and C
© 2016 Pearson Education, Inc.
C
A35.5
Two radio antennas radiating in phase are located at points A and
B, which are 6 wavelengths apart. A radio receiver is moved along
a line from point B to point C. At what distances from point B will
the receiver detect an intensity maximum?
A
B
D. both A and B
E. all of A, B, and C
© 2016 Pearson Education, Inc.
C
Q35.6
An air wedge separates two glass
plates as shown. Light of
wavelength strikes the upper
plate at normal incidence. At a
point where the air wedge has
thickness t, you will see a bright
fringe if t equals
D. either A or C.
E. any of A, B, or C.
© 2016 Pearson Education, Inc.
A35.6
An air wedge separates two glass
plates as shown. Light of
wavelength strikes the upper
plate at normal incidence. At a
point where the air wedge has
thickness t, you will see a bright
fringe if t equals
D. either A or C.
E. any of A, B, or C.
© 2016 Pearson Education, Inc.
Q35.7
A thin layer of turpentine (n = 1.472) lies on top of a sheet of
ice (n = 1.309). It is illuminated from above with light whose
wavelength in turpentine is 400 nm. Which of the following
possible thicknesses of the turpentine layer will maximize the
brightness of the reflected light?
A. 100 nm
B. 200 nm
C. 300 nm
D. 400 nm
E. more than one of the above
© 2016 Pearson Education, Inc.
A35.7
A thin layer of turpentine (n = 1.472) lies on top of a sheet of
ice (n = 1.309). It is illuminated from above with light whose
wavelength in turpentine is 400 nm. Which of the following
possible thicknesses of the turpentine layer will maximize the
brightness of the reflected light?
A. 100 nm
B. 200 nm
C. 300 nm
D. 400 nm
E. more than one of the above
© 2016 Pearson Education, Inc.
Q-RT35.1
A two-slit interference experiment uses coherent light of
wavelength 5.00 10–7 m. Rank the following points in the
interference pattern according to the intensity at each point, from
highest to lowest.
A. a point that is 1.00
10–7 m closer to one slit than the other
B. a point that is 2.50
10–7 m closer to one slit than the other
C. a point where the light waves received from the two slits are
out of phase by 0.250π rad
D. a point where the light waves received from the two slits are
out of phase by 0.400π rad
© 2016 Pearson Education, Inc.
A-RT35.1
A two-slit interference experiment uses coherent light of
wavelength 5.00 10–7 m. Rank the following points in the
interference pattern according to the intensity at each point, from
highest to lowest.
A. a point that is 1.00
10–7 m closer to one slit than the other
B. a point that is 2.50
10–7 m closer to one slit than the other
C. a point where the light waves received from the two slits are
out of phase by 0.250π rad
D. a point where the light waves received from the two slits are
out of phase by 0.400π rad
Answer: ACDB
© 2016 Pearson Education, Inc.