Propagation of Sound Wave in Air

Q. Sound cannot travel through

1. gases
2. liquids
3. solids
4. vacuum

Q. How does sound propagate in air? Explain.

Q.

An electric bell is suspended in an airtight vacuum jar. The bottom of the jar is connected to an air pump, as shown in the given figure. The air pump can fill air in the jar.

What will happen when the switches of both the bell and the pump are pressed?

1. There will be a gradual decrease in the intensity of the sound

2. A spark will be produced in the bell

3. There will be a gradual increase in the intensity of the sound

4. The jar will break into pieces

Q. Can sound travel through plasma state?

Q. In which of the following mediums can sound travel ?

1. 
   Wood
2. 
   Air
3. 
   Water
4. 
   Vacuum

Q. Sound is produced due to of particles.

1. charge
2. vibration
3. rotation

Q. Sound produced by a vibrating body reaches our ears by the actual movement of air.

1. True
2. False

Q.

(1) while you were on the Moon, would you be able to talk to each other? if not, then what is the alternative?

(2) what is sonic boom ? how is it caused? What are its effect?

Q.

how is sound produced

Q. Why can't sound travel in vacuum

Q.

Similar to sound, light can not travel in a vacuum.

1. False

2. True

Q.

Define rerefraction.

Q. Why can't sound can't travel in vacuum

Q. The particles in a wave move at the same speed as the wave.

1. True
2. False

Q. Propagation of sound can be visualized as:

1. propagation of density variations
2. propagation of pressure variations
3. a series of compressions and rarefactions
4. a transverse wave

Q. When sound waves travel from a rarer medium to a denser medium, its speed:

1. decreases

2. remain constant

3. increases

4. may increase or decrease

Q.

Which of the following is similar to the propagation of sound waves?

1. Ripple in a pond

2. Kid jumping on a rope

3. A dog running

4. A ball being thrown

Q. Statement 1: No sound can be heard on the surface of the Moon.

Statement 2: High surface temperature of the Moon restricts sound propagation.

1. Only statement 1 is correct.
2. Only statement 2 is correct​.
3. Both the statements are correct.
4. Both the statements are incorrect.

Q.

Sound wave has different speeds in different mediums because:

1. more compressible the medium is, faster the speed

2. more incompressible the medium is, faster the speed

3. lesser the volume, faster the speed

4. more the density, slower the speed

Q.

During the propagation of a wave, which of the following quantity is transferred?

1. Matter

2. Energy

3. Particles

4. Atoms