Sound

What is sound?

(a)  

Sound is produced by .......

• Vibration of particles/ objects.

• By seeing objects

• By hearing the objects

• None of the above

The most common medium through which sound travels easily to our ears.....

• Water

• Steel

• Air

• None of these

What is the compression region?

• When a vibrating object moves forward it pushes and compresses air in front of it , creating a region of high pressure is compression region .

• Compression is the region of high pressure

• Both A&B

• None of the above

Now , what is rarefaction?

(a)  

Sound needs a medium to propogate..?

• Yes

• No

• Don't know

• None of these

Sound is which type of wave?

What are the different mediums of sound?

• Air

• Water

• Steel

• All of the above

Does sound travel through vaccum?

• No

• Yes

• Don't know

Longitudinal waves are

.......

• In which the particles of medium moves in a direction parallel to the direction of propagation of disturbance.

• Particles do not move from one form to another

• The particles oscillate back and forth about their rest position

• All the above