List of top Physics Questions on Waves asked in KEAM

Two strings of the same material and same length are given equal tension. If they are vibrating with fundamental frequencies $ 1600 \text{ Hz} $ and $ 900 \text{ Hz} $, then the ratio of their respective diameters is

The ratio between the wavelengths of the air column vibrating in the first two modes in an open organ pipe is

If the speed of transverse waves on a stretched wire of linear density $7\times 10^{-3}\,\text{kg m}^{-1}$ is $100\,\text{m s}^{-1}$, then the tension in the wire is

If the speed of the transverse wave in a wire under certain tension T is v, then its speed under tension $2T$ (in $ms^{-1}$) is

The principle behind the function of Bunsen burner is

A string of length $ l $ is divided into three segments of lengths $ l_1, l_2 $ and $ l_3 $ with the fundamental frequencies $ n_1, n_2 $ and $ n_3 $ respectively. The original fundamental frequency of the string is given by

A steel rod of length 1 m is clamped at its middle. If the fundamental frequency of vibrations is 3 kHz, then the speed of sound in steel is

Find the frequency of the waveform shown in the graph.

A wire of length 1m is clamped at half of its length. If the fundamental frequency is 3kHz, then find the velocity.

To have the same RMS value as that of hydrogen at 30K, what will be the temperature of the oxygen molecule?

The equation of a stationary wave is given by \[ y = 5 \sin \frac{\pi}{2} \cos 10\pi t \, {cm} \] The distance between two consecutive nodes (in cm) is:

A man fires bullets at two hillocks, one shorter and the other taller. The taller one is behind the smaller one. If the first echo is heard after 6 s and the second echo after 12 s, then the distance between the hillocks is (velocity of sound in air = 330 m/s):

A string clamped at both the ends has a mass 10gm. length 1m and it is kept under tension of 1N. It is vibrating in the fundamental mode with an amplitude of 1cm .Assuming the standing wave pattern, the maximum acceleration seen in the string is

When a vibrating tuning fork moves towards a stationary observer with a speed of 50 m/s, the observer hears a frequency of 350 Hz. The frequency of vibration of the fork is:(Take speed of sound = 350 m/s)

A tuning fork produces 4 beats per second with both 26.0 cm and 25.2 cm of stretched sonometer wire. Frequency of the fork is

The INCORRECT statement is

Two strings of the same material and same length are given equal tension. If they are vibrating with fundamental frequencies $1600$ Hz and $900$ Hz, then the ratio of their respective radii is

A travelling wave in a medium is given by the equation $y=a\sin(\omega t-kx)$. The maximum acceleration of the particle in the medium is

A radio transmitter sends out 60 W of radiation. Assuming that the radiation is uniform on a sphere with the transmitter at its centre, the intensity (in W/m$^2$) of the wave at a distance 12 km is

The displacement of a wave is represented by $y=0.6\times10^{-3}\sin(500t-0.05x)$ where all the quantities are in their proper units. The maximum particle velocity (in $\text{ms}^{-1}$) of the medium is

Consider a wire with density $\rho$ and stress $\sigma$. For the same density, if the stress increases 2 times, the speed of the transverse waves along the wire changes by

A pipe of 1 m length is closed at one end. Taking the speed of sound in air as 320 $\text{ms}^{-1}$, the air column in the pipe cannot resonate for the frequency (in Hz)