Characteristics of Sound Waves - Jamb Physics Past Questions and Answers

Question 6:

• JAMB 1981

The quantity (timbre) of sound depends on

A. Amplitude
B. Frequency
C. Harmonics
D. Velocity
E. Wavelength

Question 7:

• JAMB 1983

In a resonance tube experiment, a tube fixed length is closed at one end and several tuning forks of increasing frequency used to obtain resonance at the open end. If the tuning fork with the lowest frequency which gave resonance had a frequency f₁ and the next tuning fork to give resonance had a frequency f₂, find the ratio \(\frac{f^2}{f^2}\).

A. 8
B. 3
C. 2
D. \(\frac{1}{2}\)
E. \(\frac{1}{3}\)

Question 8:

• JAMB 1983

In a resonance tube experiment, a tube fixed length is closed at one end and several tuning forks of increasing frequency used to obtain resonance at the open end. If the tuning fork with the lowest frequency which gave resonance had a frequency f₁ and the next tuning fork to give resonance had a frequency f₂, find the ratio \(\frac{f^2}{f^2}\).

A. 8
B. 3
C. 2
D. \(\frac{1}{2}\)
E. \(\frac{1}{3}\)

Question 9:

• JAMB 1983

which of the following is NOT correct? i. the pitch of a sound note depends on the frequency of vibrations. ii. the intensity of a sound note is proportional to the amplitude of vibrations. iii. beats are produced by two sources of sound because one wave is travelling faster than the other. iv. when two sources of sound of frequencies 500Hz and 502Hz are sounded together, a beat frequency of 2Hz is observed. v. the first harmonic of a tone have double the frequency of the fundamental note.

A. I and ii
B. Ii and iii
C. I and iii
D. Iii and iv
E. Iv and v

Question 10:

• JAMB 1984

Which of the following statements is (are) NOT correct? i. pressure changes do not affect the speed of sound in air ii. the velocity of sound increases with temperature iii. the quality of the note depends only on its frequency

A. I only
B. Ii only
C. Iii only
D. I and iii
E. Ii and iii