transmitter 69% 30º H + centre line C 4. A sonar transmitter produces 14 kHz waves in water, creating the intensity pattern shown above. The dark lines represent positions over which the intensity of the sound is constant. The intensity pattern is analogous to the effect of a single-slit interference pattern in optics. Such a device functions best when the central maximum is very narrow. Which of the following combination of changes will produce a central maximum that is the narrowest? 20 a. same frequency but halve the size of the vibrating surface b. double the frequency and halve the size of the vibrating surface c. d. halve the frequency and double the size of the vibrating surface double the frequency and double the size of the vibrating surface e. halve the frequency and halve the size of the vibrating surface 5. A diffraction grating of 1000 lines/cm has red light of wavelength 700 nm pass through it. The distance between the first and third principal bright spots on a screen 2 m away is a. 14 cm b. 28 cm c. 42 cm d. 140 cm e. 280 cm I 6. Monochromatic light strikes a thin film normal to the surface. On either side of the thin film is air. To obtain a reflected minimum, the lowest (non-zero) thickness of the film must be a. much less than 2 2 b. 8 2 000 2 d. 2 e. 2 MacBook Air SC
transmitter 69% 30º H + centre line C 4. A sonar transmitter produces 14 kHz waves in water, creating the intensity pattern shown above. The dark lines represent positions over which the intensity of the sound is constant. The intensity pattern is analogous to the effect of a single-slit interference pattern in optics. Such a device functions best when the central maximum is very narrow. Which of the following combination of changes will produce a central maximum that is the narrowest? 20 a. same frequency but halve the size of the vibrating surface b. double the frequency and halve the size of the vibrating surface c. d. halve the frequency and double the size of the vibrating surface double the frequency and double the size of the vibrating surface e. halve the frequency and halve the size of the vibrating surface 5. A diffraction grating of 1000 lines/cm has red light of wavelength 700 nm pass through it. The distance between the first and third principal bright spots on a screen 2 m away is a. 14 cm b. 28 cm c. 42 cm d. 140 cm e. 280 cm I 6. Monochromatic light strikes a thin film normal to the surface. On either side of the thin film is air. To obtain a reflected minimum, the lowest (non-zero) thickness of the film must be a. much less than 2 2 b. 8 2 000 2 d. 2 e. 2 MacBook Air SC
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:transmitter
69%
30º
H
+
centre line
C
4. A sonar transmitter produces 14 kHz waves in water, creating the intensity pattern shown above. The dark lines
represent positions over which the intensity of the sound is constant. The intensity pattern is analogous to the
effect of a single-slit interference pattern in optics. Such a device functions best when the central maximum is
very narrow. Which of the following combination of changes will produce a central maximum that is the
narrowest?
20
a.
same frequency but halve the size of the vibrating surface
b.
double the frequency and halve the size of the vibrating surface
c.
d.
halve the frequency and double the size of the vibrating surface
double the frequency and double the size of the vibrating surface
e.
halve the frequency and halve the size of the vibrating surface
5. A diffraction grating of 1000 lines/cm has red light of wavelength 700 nm pass through it. The distance
between the first and third principal bright spots on a screen 2 m away is
a. 14 cm
b.
28 cm
c.
42 cm
d. 140 cm
e.
280 cm
I
6. Monochromatic light strikes a thin film normal to the surface. On either side of the thin film is air. To obtain a reflected
minimum, the lowest (non-zero) thickness of the film must be
a. much less than 2
2
b.
8
2
000
2
d.
2
e.
2
MacBook Air
SC
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