NEET Physics Waves MCQs

A sound wave travels through a medium with a bulk modulus $B$ and density $\rho$. If the medium is suddenly compressed such that its density becomes $1.5\rho$ while the temperature remains constant, what is the new speed of sound in the medium?

Two sound waves of equal amplitude and slightly different frequencies $f_1$ and $f_2$ are travelling in the same direction. The time interval between successive maxima of intensity is:

A source emits sound of frequency $f$. An observer is moving towards the source with velocity $v_o$ and the source is moving away from the observer with velocity $v_s$. If $v$ is the velocity of sound, the apparent frequency heard by the observer is:

A closed organ pipe and an open organ pipe have the same fundamental frequency. If the speed of sound in air is $v$, what is the ratio of their lengths?

A sound wave travels from air into water. Which of the following properties of the wave remains unchanged?

In a resonance tube experiment, the first two resonance lengths are observed at 16 cm and 50 cm. The end correction of the tube is:

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: