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1 | |
A physical medium is necessary for the transmission of all kinds of waves. |
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| | A) | True |
| | B) | False |
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2 | |
The speed of a wave in a string is a function of the linear density of the string but is really independent of the actual length of the string. |
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| | A) | True |
| | B) | False |
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3 | |
In a longitudinal wave, the wavelength is equal to the distance between adjacent condensations or between adjacent rarefactions. |
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| | A) | True |
| | B) | False |
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4 | |
Increasing the frequency of a wave results in a decrease in its wavelength if other parameters are held constant. |
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| | A) | True |
| | B) | False |
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5 | |
For a standing wave, the distance between adjacent nodes or between adjacent antinodes is equal to the wavelength. |
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| | A) | True |
| | B) | False |
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6 | |
The superposition principle applies only for transverse waves. |
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| | A) | True |
| | B) | False |
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7 | |
The third harmonic is equivalent to the second overtone when characteristic frequencies are described for a vibrating string. |
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| | A) | True |
| | B) | False |
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8 | |
Constructive interference results in a wave of greater energy than the sum of the energies of its component waves. |
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| | A) | True |
| | B) | False |
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9 | |
Standing waves are the result of constructive interference. |
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| | A) | True |
| | B) | False |
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10 | |
If the frequency of a wave is doubled and other parameters remain the same, the energy of the wave per unit of length will be quadrupled. |
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| | A) | True |
| | B) | False |
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11 | |
In a longitudinal wave, the individual particles of the medium move |
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| | A) | in circles |
| | B) | in elipses |
| | C) | parallel to wave propagation |
| | D) | perpendicular to wave propagation |
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12 | |
For a vibrating string, the third overtone will be the same as the |
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| | A) | second harmonic |
| | B) | third harmonic |
| | C) | fourth harmonic |
| | D) | fifth harmonic |
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13 | |
Two particles along a wave train are in phase if they have the same |
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| | A) | displacement |
| | B) | speed |
| | C) | amplitude |
| | D) | energy |
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14 | |
A longitudinal wave traveling at 300 m/s has a wavelength of 2 m. Its frequency is |
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| | A) | 100 Hz |
| | B) | 150 Hz |
| | C) | 167 Hz |
| | D) | 600 Hz |
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15 | |
If 120 waves strike a wall in 1 min and the distance between adjacent crests is 2 m, the speed of the waves is |
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| | A) | 2 m/s |
| | B) | 4 m/s |
| | C) | 8 m/s |
| | D) | 30 m/s |
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16 | |
A flexible cable 20 m long weighs 16 N and is stretched between two poles with a force of 450 N. The speed of a transverse wave through this medium is |
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| | A) | 16 m/s |
| | B) | 23.7 m/s |
| | C) | 57.3 m/s |
| | D) | 74.2 m/s |
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17 | |
If the frequency of the fundamental for a vibrating string is 200 Hz, the second overtone has a frequency of |
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| | A) | 200 Hz |
| | B) | 400 Hz |
| | C) | 600 Hz |
| | D) | 800 Hz |
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18 | |
A metal string of mass 250 g and length 25 cm is under a tension of 400 N. The fundamental frequency for this string is |
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| | A) | 40 Hz |
| | B) | 400 Hz |
| | C) | 126 Hz |
| | D) | 800 Hz |
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19 | |
The rate at which energy is propagated down a string is not dependent on the |
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| | A) | frequency |
| | B) | amplitude |
| | C) | linear density |
| | D) | length of the string |
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20 | |
The ratio of the wavelength to the period is a measure of |
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| | A) | frequency |
| | B) | speed |
| | C) | period |
| | D) | amplitude |
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21 | |
In a(n) wave, the vibration of the individual particles is perpendicular to the direction of wave propagation. |
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22 | |
The speed of a wave in a vibrating string is equal to the square root of the divided by the . |
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23 | |
The distance between any two particles that are in phase is known as the . |
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24 | |
The energy transmitted per unit length of a string is proportional to the square of the and to the square of the . |
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25 | |
For characteristic frequencies of a vibrating string, the fifth harmonic is the overtone. |
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26 | |
When two or more waves interfere, the resultant at any point in time is the algebraic sum of the of each wave. This is a statement of the principle. |
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27 | |
For a standing wave, the points along a vibrating string that remain at rest are called . The points where the amplitude is a maximum are called . |
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28 | |
The speed of any wave may be found from the product of and . |
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29 | |
For a standing wave, the wavelength of the component waves is the distance between alternate or between alternate . |
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30 | |
The characteristic frequencies consisting of the fundamental and all its overtones are known as the series. |
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