Propagation of Sound Waves - Jamb Physics Past Questions and Answers

Question 1:

• JAMB 1978

A herdsman yelling out to fellow herdsman heard his voice reflected by cliff 4s later. What is the velocity of sound in air if the cliff is 680m away?

A. 170ms^-1
B. 136ms^-1
C. 340ms^-1
D. 680ms^-1
E. 510ms^-1

Question 2:

• JAMB 1979

Which of the following types of waves cannot travel through a vacuum?

A. Sound waves
B. Light waves
C. Infra-red waves
D. X-radiation
E. Redio waves

Question 3:

• JAMB 1979

Radio carrier waves are generated by causing electrons to oscillate rapidly in

A. A microphone
B. A television camera
C. An antenna
D. Coaxial cables
E. A transmitter

Question 4:

• JAMB 1980

A man stands one-third of the way between two walls and claps his hands, He hears two distinct echoes 1s apart. If the speed of sound is 330ms^-1 the distance between the wall is

A. 33m
B. 110m
C. 220m
D. 330m
E. 495m

Question 5:

• JAMB 1982

The echo of a sounder from the bottom of an ocean is heard 2.5 seconds later. If the speed of sound in water is 1,400ms^-1, the depth of the ocean is

A. 1,750m
B. 3,500m
C. 1,400m
D. 2,800m
E. 2,100m