A progressive wave travelling along the positive $x-$ direction is represented by $y(x, t) = A\,sin\,\left( {kx - \omega t + \phi } \right)$. Its snapshot at $t = 0$ is given in the figure For this wave, the phase $\phi $ is
  • A$\pi $
  • B$\frac{\pi }{2}$
  • C$-\frac{\pi }{2}$
  • D$0$
JEE MAIN 2019, Medium
art

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Similar Questions

  • 1
    A whistle revolves in a circle with an angular speed of $20\; rad/sec$ using a string of length $50 \;cm.$ If the frequency of sound from the whistle is $385\; Hz,$ then what is the minimum frequency heard by an observer, which is far away from the centre in the same plane ... $Hz$ ? ($v = 340 \;m/s$)
    View Solution
  • 2
    The transverse displacement $y (x, t)$ of a wave on a string is given by $y\left( {x,t} \right) = {e^{ - \left( {a{x^2} + b{t^2} + 2\sqrt {ab} \;xt} \right)}}$ .This represents a 
    View Solution
  • 3
    The equation of a wave disturbance is given as : $y = 0.02 cos \left( {\frac{\pi }{2} + 50\pi t} \right) cos (10 x),$ where $x$ and $y$ are in meters and $t$ in seconds. Choose the wrong statement:
    View Solution
  • 4
    In a city sound intensity level increases uniformly by about $1\ dB$ annually. How many years will it take for intensity of sound to become double ..... $year$
    View Solution
  • 5
    If the initial tension on a stretched string is doubled, then the ratio of the initial and final speeds of a transverse wave along the string is :
    View Solution
  • 6
    A copper wire is held at the two ends by rigid supports. At $50^{\circ} C$ the wire is just taut, with negligible tension. If $Y=1.2 \times 10^{11} \,N / m ^2, \alpha=1.6 \times 10^{-5} /{ }^{\circ} C$ and $\rho=9.2 \times 10^3 \,kg / m ^3$, then the speed of transverse waves in this wire at $30^{\circ} C$ is .......... $m / s$
    View Solution
  • 7
    A tuning fork produces waves in a medium. If the temperature of the medium changes, then which of the following will change
    View Solution
  • 8
    A sound source is moving towards a stationary observer with $1/10$ of the speed of sound. The ratio of apparent to real frequency is
    View Solution
  • 9
    Equation of a progressive wave is given by $y = 4\sin \left\{ {\pi \left( {\frac{t}{5} - \frac{x}{9}} \right) + \frac{\pi }{6}} \right\}$. Then which of the following is correct
    View Solution
  • 10
    A string fixed at both ends vibrates in three loops. The wave length is $10\, cm$ . The length of string is .... $cm$
    View Solution