Full Name*

First Name Last Name

Number

1.Sound is produced due to

friction circulation vibration refraction

2.What type of waves are Sound Waves?

Latitudinal waves Longitudinal waves Latitudinal mechanical waves Transverse wave

3.The pitch of sound depends on

frequency amplitude both of these none of the these

4.Compressions are formed where air pressure is

higher lower normal zero

5.Which of the following statement is or are correct about longitudinal mechanical waves?

The longitudinal mechanical waves which lie in the frequency range 20 Hz to 20000 Hz are called audible or sound waves The longitudinal mechanical waves having frequencies less than 20 Hz are called infrasonic The longitudinal mechanical waves having frequencies greater than 20,000 Hz are called ultrasonic waves All of the above are correct

6.The Doppler effect is produced if

the source is in motion. the detector is in motion. both of the above. none of the above

7. The source of a sound moves away from the listener. The listener has the impression that the source isuestion

lower in pitch higher in amplitude lower in velocity all above

8. Sonic shock waves are generated when the source of sound moves at a greater speed than the speed of sound in the medium.

True False