Introduction to Sound

Q. What is the speed of sound in vacuum?

1. $330m{s}^{-1}$
2. $3\times {10}^{8}m{s}^{-1}$
3. $250m{s}^{-1}$
4. $0m{s}^{-1}$

Q. A sound is heard, when a stretched rubber band is plucked.

1. False
2. True

Q. Sound travels in the form of .

1. waves
2. rays
3. circles

Q.

A body produces sound only if it is

1. made of steel

2. made of glass

3. touched

4. vibrating

Q.

Light travels much faster than sound.

1. True
2. False

Q. Which of the following could be associated with acoustics?

1. Thermal property of sound.
2. Resonance.
3. Production of sound.
4. Propagation of sound.

Q. Which of the following statements is true regarding source of sound?

1. An object which receives sound.
2. An object which produces sound.
3. An object which absorbs sound.
4. An object which is responsible for restricting sound.

Q. Which of the following holds true when a big metal dish falls from a sufficient height on a hard surface?

1. A loud noise is followed after it falls.
2. A feeble noise is followed after it.
3. No noise is generated.
4. The particles of metal dish vibrates.

Q. Sound travels in the form of .

1. rays
2. waves
3. circles
4. None of the above