NEET Physics Waves Organ Pipes MCQs

A closed organ pipe and an open organ pipe have the same fundamental frequency. If the length of the closed pipe is 20 cm, and the speed of sound in air is 340 m/s, what is the length of the open pipe closest to the first overtone of the closed pipe?

Two organ pipes, one open and one closed at one end, resonate at their first overtones with frequencies 600 Hz and 750 Hz respectively. If the speed of sound is 330 m/s, the ratio of the lengths of the pipes is:

A closed organ pipe has a fundamental frequency of $f$. If the temperature increases, which of the following is true about the fundamental frequency and speed of sound?

An open organ pipe of length $L$ has a fundamental frequency $f$. A hole is drilled at $L/4$ from one end. The fundamental frequency of the pipe now becomes:

Two closed organ pipes of lengths $L_1$ and $L_2$ ($L_1 < L_2$) produce 2 beats/s when sounded together. If $L_2$ is slightly increased, the beat frequency increases. The fundamental frequencies $f_1$ and $f_2$ are related by:

A closed organ pipe of length $L$ resonates at its fundamental frequency $f$. An open organ pipe resonates at the same frequency $f$. If the end correction for both pipes is $e$, the ratio of their physical lengths is:

A closed organ pipe and an open organ pipe have the same fundamental frequency. What is the ratio of their lengths?

The fundamental frequency of a closed organ pipe is 100 Hz. What is the frequency of its third harmonic?

Which of the following is NOT a characteristic of a closed organ pipe?

If the length of a closed organ pipe is doubled, its fundamental frequency will be: