MCQ
What is the phase difference between the displacement wave and pressure wave in sound wave?
  • A
    Zero 
  • $\frac{\pi}{2}$
  • C
    $\pi$
  • D
    $\frac{\pi}{4}$

Answer

Correct option: B.
$\frac{\pi}{2}$
b
(b)

Phase difference between the pressure and displacement wave will always be $\frac{\pi}{2}$.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

$X-$ rays are known to be electromagnetic radiations. Therefore the $X-$ ray photon has
Assertion : Two equipotential surfaces cannot cut each other.

Reason : Two equipotential surfaces are parallel to each other.

A body is in pure rotation. The linear speed $v$​ of a particle, the distance $r$ of the particle from the axis and angular velocity $\omega $ of the body are related as $\omega  = \frac{v}{r}$, thus
The two ends of a uniform conductor are joined to a cell of $e.m.f.$ $E$ and some internal resistance. Starting from the midpoint $P$ of the conductor, we move in the direction of current and return to $P$. The potential $V$ at every point on the path is plotted against the distance covered $(x)$. Which of the following graphs best represents the resulting curve
An electric dipole in a uniform electric field experiences (When it is placed at an angle $\theta $ with the field)
Which of the following has negative temperature coefficient of resistance
There is a simple pendulum hanging from the ceiling of a lift. When the lift is stand still, the time period of the pendulum is $T$. If the resultant acceleration becomes $g/4,$ then the new time period of the pendulum is
Keeping dissimilar poles of two magnets of equal pole strength and length same side, their time period will be
Two trains travelling on the same track are approaching each other with equal speeds of $40\ m/s$ . The drivers of the trains begin to decelerate simultaneously when they are just $2.0\ km$ apart. Assuming the decelerations to be uniform and equal, the value of the deceleration to barely avoid collision should be..........$m/s^2$
An electron with speed $v$ and a photon with speed $c$ have the same $de-Broglie$ wavelength. If the kinetic energy and momentum of electron are $E_{ e }$ and $pe _{ e }$ and that of photon are $E _{ ph }$ and $p _{ ph }$ respectively. Which of the following is correct?