When sound waves travel from air to water, which of the following remains constant?

The temperature at which the speed of sound in air becomes double its value at 27°C is________.

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity will _________.

The velocity of sound in are is not affected by change in the ________.

With the rise of temperature, the speed of sound in a gas ________.

The equation of a wave is y = 4 sin \(\left\{ \frac { \pi }{ 2 } \left( 2t+\frac { x }{ 8 } \right) \right\} \)where y, x are in em and t in seconds. The amplitude wavelength, velocity and frequency of the wave are, respectively _________.

A wave of frequency 500 Hz has a velocity 300 m/s. The distance between two nearest points which are 60° out of phase, is _______

The speed of the wave represented by y =A sin(ωt - kx) is ________.

Choose the correct statement ____________

Eqution of travelling wave on a stretched string of linear density 5 g/m is y = 0.03 sin(450t–9x), where distance and time are measured in SI units. The tension in the string is 

Mechanical Waves ________.

The fractional change in wavelength of light coming from a star is 0.014%. What is its velocity?

If an experment with sonometer, a tuning fork of frequency 256 Hz resonates with a length of 25cm and another tuning fork resonates with constants the frequency of the second tuning fork is _________________.

A particle on the tough of a wave art any instant will come to the mean position after a time (7= time period) ______________.

Y₁ = 4 sin(wt + kx), Y₂ = -4 cos(wt + kx), the phase difference is ________________.

The equation of a simple harmonic wave is given y = 5 sin\(\frac{\pi}{2}\)(100 - x); Where x and y are in meter and time is in seconds. The period of the wave in second will be _______________.

A wave travelling along the x-axis described by the equation y (x, t) = 0.005 cos (\(\alpha x-\beta t\)) of the wavelength and time period of the wave are 0.08 and 2.0s then and in appropriate units are ____________.

Which of the following statement are true for a stationary wave?

Change in temperature of the medium changes ________________.

Sound waves of wavelength travelling in a medium with a speed of v m/s enter into the medium where its speed is 2 v m/s, wavelength of sound waes in the second medium is?

Let y = \(\frac{1}{1+x^2}\) at t = 0 s be the amplitude of the wave propagating in the positive x-direction. At t = 2 s, the amplitude of the wave propagating becomes \(y=\frac{1}{1+(x-2)^{2}}. \) Assume that the shape of the wave does not change during propagation. The velocity of the wave is

Which of the following represents a wave

The displacement y of a wave travelling in the x direction is given by y = (2\(\times\)10 ^-3) sin (300t - 2x + \(\frac{\pi}{4}\)), where x and y are measured in metres and t in second. The speed of the wave is

A person standing between two parallel hills fires a gun and hears the first echo after t₁ sec and the second echo after t₂ sec. The distance between the two hills is

A student tunes his guitar by striking a 120 Hertz with a tuning fork, and simultaneously plays the 4^th string on his guitar. By keen observation, he hears the amplitude of the combined sound oscillating thrice per second. Which of the following frequencies is the most likely the frequency of the 4^th string on his guitar?