Standing Waves in Strings and Organ Pipes, Fundamental Mode and Harmonics, Beats NEET Questions

Physics - Oscillations and Waves

Standing Waves in Strings and Organ Pipes, Fundamental Mode and Harmonics, Beats MCQ Questions


13.
In a closed organ pipe, the second harmonic is:
A.
Twice the fundamental frequency
B.
Equal to the fundamental frequency
C.
Not possible
D.
Half the fundamental frequency
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ANSWER :
C. Not possible
14.
If the length of a vibrating string is doubled, the fundamental frequency:
A.
Becomes four times
B.
Doubles
C.
Remains the same
D.
Is halved
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ANSWER :
D. Is halved
15.
The frequency of beats is maximum when the difference in frequencies of two sources is:
A.
Infinite
B.
Very large
C.
Zero
D.
Small
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ANSWER :
D. Small
16.
The phase difference between particles at a node in a stationary wave is:
A.
360 degrees
B.
90 degrees
C.
180 degrees
D.
Zero
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ANSWER :
D. Zero
17.
The fundamental frequency of a closed organ pipe is 200 Hz. The frequency of its third harmonic will be:
A.
800 Hz
B.
600 Hz
C.
400 Hz
D.
1000 Hz
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ANSWER :
D. 1000 Hz
18.
In a standing wave pattern, the distance between two consecutive nodes is:
A.
位/4
B.
位
C.
2位
D.
位/2
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ANSWER :
D. 位/2