NEET Physics Waves Velocity Of Sound MCQs

A closed organ pipe resonates at a fundamental frequency of 256 Hz. What is the length of the pipe if the speed of sound in air is 340 m/s?

A closed air column has a fundamental resonant frequency of 440 Hz. If the next resonant frequency is 1320 Hz, what is the speed of sound in the column?

A sonometer is set on the floor of a lift. When the lift is at rest, the sonometer wire vibrates with fundamental frequency 256 Hz. When the lift goes up with acceleration $a = \frac{{9g}}{{16}}$ vibration of the same wire changes to

A sonometer is set on the floor of a lift. When the lift is at rest, the sonometer wire vibrates with fundamental frequency 256 Hz. When the lift goes up with acceleration $a = \frac{{9g}}{{16}}$ vibration of the same wire changes to

Two waves travelling in a medium in the x-direction are represented by , ${y_1} = A\sin \left( {\alpha t - \beta x} \right)$ and ${y_2} = A\cos \left( {\beta x + \alpha t - \pi /4} \right)$ where ${y_1}\;\,\,and\,\,{\rm{ }}{y_2}$ are the displacements of the particles of the medium, t is time, and  $\alpha \,and\,\beta$ are constants. The two waves have different

Two waves travelling in a medium in the x-direction are represented by , ${y_1} = A\sin \left( {\alpha t - \beta x} \right)$ and ${y_2} = A\cos \left( {\beta x + \alpha t - \pi /4} \right)$ where ${y_1}\;\,\,and\,\,{\rm{ }}{y_2}$ are the displacements of the particles of the medium, t is time, and  $\alpha \,and\,\beta$ are constants. The two waves have different

On the superposition of two harmonic oscillations represented by ${X_1} = a\sin \left( {\omega t + {\phi _1}} \right)$ and ${X_2} = a\sin \left( {\omega t + {\phi _2}} \right)$a resulting oscillation with the same time period and same amplitude is obtained. The value of ${\phi _1} - {\phi _2}$ is

On the superposition of two harmonic oscillations represented by ${X_1} = a\sin \left( {\omega t + {\phi _1}} \right)$ and ${X_2} = a\sin \left( {\omega t + {\phi _2}} \right)$a resulting oscillation with the same time period and same amplitude is obtained. The value of ${\phi _1} - {\phi _2}$ is

5 beats/second are heard when a turning fork is sounded with a sonometer wire under tension, when the length of the sonometer wire is either 0.95 m or 1 m. The frequency of the fork will be :

Two monochromatic coherent light beams A and B have intensities $I$ and $\frac{I}{4}$ respectively. If these waves are superposed, the maximum and minimum intensities will be