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Sounds waves and Motion MCQ question and answer with solution | Physics Gk MCQs

Learn Sounds waves and Motion MCQ Questions and answers with easy and logical explanations in Physics Gk . Sounds waves and Motion MCQ question provides all type of technical mcq questions which is important for SSC-CGL, UPPSC, NDA, CDS and all govt examinations Page-4 section-1

Each section contains 100 MCQs on Sounds waves and Motion .
31
In any medium, the speed of sound increases, as we increase . . . . . . . .
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Answer & Solution
Answer: Option A
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32
A sound source sends a wave of 600 Hertz. This produces a wavelength of 3 m. Speed of sound wave in this question is . . . . . . . .
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Answer & Solution
Answer: Option B
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33
Which of the following is the unit of perceived loudness of sound?
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Answer & Solution
Answer: Option A
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34
For humans, the audible waves are those that:
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Answer & Solution
Answer: Option C
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35
If the distance between a crest and its consecutive trough for a sound wave is L, then its wavelength is given by
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Answer & Solution
Answer: Option B
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36
Velocity of sound in air
1. Decreases with temperature
2. Increases with temperature
3. Increases with pressure
4. Is independent of pressure
which of the above the true?
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Answer & Solution
Answer: Option C
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37
Velocity of sound in air does not change with the change of
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Answer: Option B
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38
The frequency of a sound wave is 50 Hz and its wavelength is 4 meters. What is the speed of sound wave?
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Answer: Option A
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39
A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is
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Answer: Option C
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40
Which one of the following is the effect of the flight of supersonic jet?
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Answer: Option C
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