If the ratio of intensities of two waves is $1 : 25$,then the ratio of their amplitudes will be

If the pressure amplitude in a sound wave is tripled,then the intensity of sound is increased by a factor of

$A$ surface of area $S$ is placed perpendicular to the direction of travel of a plane wave. The energy per unit time intercepted by the surface is $E$ when the amplitude of the wave is $A$. The area of the surface is reduced to $\frac{1}{2} S$ and the amplitude of the wave is increased to $2A$. What is the energy per unit time intercepted by this smaller surface?

The displacement-time graphs for two sound waves $A$ and $B$ are shown in the figure. The ratio of their intensities $I_A/I_B$ is equal to:

Which property distinguishes progressive waves from stationary waves?

As a wave propagates,which of the following statements is correct?