Propagation of Sound Waves - Jamb Physics Past Questions and Answers

Question 16:

• JAMB 1990

An organic pipe closed at one end is 80cm long. Determine the frequency of the fundamental note assuming that the speed of sound in air is 340ms-1

A. 106Hz
B. 213Hz
C. 318Hz
D. 425Hz

Question 17:

• JAMB 1994

The sound from a source travelled to the bottom of the sea and the echo was heard 4s later. If the speed of sound in sea water is 1500ms^-1 the depth of the sea is

A. 6000m
B. 3000m
C. 1500m
D. 375m

Question 18:

• JAMB 1994

A pipe of length 45cm is closed at the end. Calculate the fundamental frequency of the sound wave generated in the pipe if the velocity of sound in air is 360ms^-1 [Neglect end correction]

A. 5.5Hz
B. 148.5Hz
C. 200.0Hz
D. 550.0Hz

Question 19:

• JAMB 2002

I. Temperature.
II. Density of air molecules
III. Pressure
IV. Pitch
Which of the above will affect the velocity of sound in the air

A. I and II only
B. II and IV only
C. I,II and IV only
D. I,II,III nad IV

Question 20:

• JAMB 2002

The phenomenon that makes sound persist when its source has been removed is known as

A. Acoustic vibration
B. Rarefaction
C. Echo
D. Reverberation