# MCQs on Sound Waves Questions and Answers

## Sound Waves – Definition

Sound is a wave motion of altering pressure. Human ear can detect sound waves with the help of eardrum. The velocity of sound wave is 1130 feet per seconds. Sound wave cannot travel in vacuum. The unit of frequency of a wave is hertz or cycle/sec. All the MCQs on Sound Waves Questions and Answers are published according to the new study syllabus for academic year 2021-22.

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The aim is to provide Sound Waves MCQs questions and answers to understand the concepts of waves. If you are willing to learn the concepts of Basic Electronics MCQs multiple choice questions with answer then read all the questions and answers. You will be surely able to qualify for all kinds of Quiz / tests / Interviews after understanding the Introduction to Sound Wave. If you are a students, technician or teacher then you can learn the basic concept of Sound Waves applications, principle and function.

### Sound Waves MCQs (Questions and Answers)

Q1. ________ is a wave motion of altering pressure.

1. Compression
2. Sound
3. Vibration
4. None is correct

Q2. Low frequencies produce bass tone.                   True / False

Q3. High frequencies produce ________ tone.

1. bass
2. treble
3. complex
4. pure

Q4. A point of maximum pressure in a sound wave is called compression.           True / False

Q5. The minimum pressure in a sound wave is called ________.

1. fraction
2. rarefaction
3. vibration
4. wavelength

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Q6. Loudness is an intensity of a soundwave.                  True / False

Q7. The formula to calculate the wavelength of sound wave is __________.

1. λ = F / V
2. λ = FV
3. λ = V / F
4. all are correct

Q8. The human ears detects sound waves by eardrum.         True / False

Q9. The velocity of sound wave in the air is __________.

1. 1130 feet per seconds
2. 344.3 feet per seconds
3. 1280 feet per seconds
4. a & b are correct

Q10. The unit of frequency wave is Hertz or cycles/sec.           True / False

Q11. The velocity of a sound is much higher in ____________.

1. liquid
2. metal
3. vacuum
4. a & b are correct

Q12. The frequency of sound waves is equal to the vibrations produced by source.          True / False