Assertion: On reflection from a rigid boundary (denser medium), there is a complete reversal of phase.

Reason: This is because, on reflection at a denser medium, both the particle velocity and wave velocity are reversed in sign.

A sound source emits sound waves in a uniform medium. If energy density is $E$ and maximum speed of the particles of the medium is $v_{\text{max}}$, the plot between $E$ and $v_{\max }$ is best represented by,

The well known example of longitudinal waves is,

When a tuning fork produces sound waves in air, which one of the following is same in the material of tuning fork as well as in air?

The wave described by, $y=0.25\sin (10\pi x-2\pi t)$ where, $x$ and $y$ are in $\mathrm{meters}$ and $t$ in $\sec$, is a wave travelling along the,

Given that $y=A\sin \left[\left(\frac{2\pi }{\lambda }(ct-x)\right)\right],$ where $y$ and $x$ are measured in metres. Which of the following statements is true?

The equation of a plane progressive wave is given by $y=3$sin $\pi \left(\frac{t}{0.02}-\frac{x}{20}\right)$ . The frequency of the wave is 

Progressive wave of sound is represented by $y=A\sin [400\pi t-\pi x/6.85]$ where $x$ is in $m$ and $t$ is in s. Frequency of the wave will be 

If the equation of a transverse wave is $y=5\sin 2\pi \left[\frac{t}{0.04}-\frac{x}{40}\right],$ where distance is in cm and time in second, then the wavelength of the wave is