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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-3 section-2

Each section contains 100 MCQs on Sounds waves and Motion .
21
The sound produced by a single frequency is called . . . . . . . .
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Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
22
A radio station broadcast at 30 metre band. The frequency of the carrier wave transmitted by this station is
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Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
23
A sound wave produced 40 crests and 40 troughs in 0.3 seconds. Find the frequency of the wave.
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Answer & Solution
Answer: Option C
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24
The velocity of sound in air is affected by change in the
1. Moisture content of air.
2. Temperature of air.
3. Composition of air.
4. Atmospheric pressure.
Choose the correct answer.
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
25
We hear other's speaking to us from adjacent rooms due to . . . . . . . . of sound waves.
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Answer & Solution
Answer: Option B
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26
Which of the following statements is true / false about the speed of sound in different mediums at 25°C?
A. In helium gas, the speed of sound is 965 km/s.
B. In hydrogen gas, the speed of sound is 1284 m/s.
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Answer & Solution
Answer: Option B
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27
Which type of electromagnetic radiation is used in the remote control of a television?
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Answer & Solution
Answer: Option A
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28
A pendulum clock is lifted to a height where the gravitational acceleration has a certain value of g. Another pendulum clock of same length, but of double the mass of the bob is lifted to another height where the gravitational acceleration is $$\frac{g}{2}$$. The time period of the second pendulum would be (in terms of period T of the first pendulum)
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Answer & Solution
Answer: Option A
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29
Which of the following are false. Sound waves are . . . . . . . . waves.
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Answer & Solution
Answer: Option C
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30
Which of the following electromagnetic wave has the shortest wavelength?
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Answer & Solution
Answer: Option D
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