2025 Exam Questions
Q. A string of length 2 m is vibrating with 2 loops. The distance between its node and adjacent antinode is \qquad .
(A) 0.5 m
(B) 1.0 m
(C) 1.5 m
(D) 2.0 m
Q. Explain harmonics and overtones.
Q. Obtain an expression for practical determination of end correction –
(i) for a pipe open at both ends and
(ii) for a pipe closed at one end.
2024 Exam Questions
Q. Phase difference between a node and an adjacent antinod in a stationary wave is_____.
(a) \frac\pi4rad
(b) \frac\pi2rad
(c) \frac{3\pi}4rad
(d) \pi\;rad
Q. Two tuning forks having frequencies 320 Hz and 340 Hz are sounded together to produce sound waves. The velocity of sound in air is 340 m/s. Find the difference in wavelength of these waves.
Q. Derive an expression for equation of stationary wave on a stretched string. Show that the distance between two successive nodes or antinodes is λ/2.
2023 Exam Questions
Q. Distinguish between free vibrations and forced vibrations.
Q. Two tuning forks of frequencies 320 Hz and 340 Hz are sounded together to produce sound wave. The velocity of sound in air is 326.4 m/s. Calculate the difference in wavelengths of these waves.
2022 Exam Questions
Q. Standing waves are produced on a string fixed at both ends. In this case ____.
(A) all particles vibrate in phase
(B) all antinodes vibrate in phase
(C) all alternate antinodes vibrate in phase
(D) all particles between two consecutive antinodes vibrate in phase
Q. State any two characteristics of progressive waves.
Q. What are harmonics and overtones (Two points)?
Q. Prove that the frequency of beats is equal to the difference between the frequencies of the two sound notes giving rise to beats.
Q. A pipe open at both the ends has a fundamental frequency of 600 Hz. The first overtone of a pipe closed at one end has the same frequency as the first overtone of the open pipe.How long are the two pipes?
[Velocity of sound in air = 330 m/s]
