Characteristics of Sound Waves - Jamb Physics Past Questions and Answers

Question 11:

• JAMB 1984

Of two identical tuning forks with natural frequency 256Hz, one is loaded so that 4 beats per second are heard when they are sounded together. What is the frequency of the loaded tuning fork?

A. 260Hz
B. 252Hz
C. 248Hz
D. 264Hz
E. 258Hz

Question 12:

• JAMB 1985

If the fundamental frequency of a closed pipe organ on a day when the speed of sound is 340ms^-1 is 170Hz, then the length of the pipe is

A. 50cm
B. 70cm
C. 100cm
D. 150cm
E. 200cm

Question 13:

• JAMB 1986

A wave of frequency 10Hz forms a stationary wave pattern in a medium where the velocity is 20cms^-1. The distance between adjacent nodes is

A. 1.0cm
B. 1.5cm
C. 2.0cm
D. 5.0cm

Question 14:

• JAMB 1987

Which of the following instruments has a pure tone?

A. Guitar
B. Vibrating strings
C. Tuning fork
D. Siren

Question 15:

• JAMB 1987

The lowest note emitted by a stretched string has a frequency of 40Hz. How many overtones are there between 40Hz and 150Hz?

A. 1
B. 2
C. 3
D. 4