Beats are produced by two waves given by ${y_1} = a\sin 2000\,\pi t$ and ${y_2} = a\sin 2008\,\pi t$. The number of beats heard per second is
  • A$0$
  • B$1$
  • C$4$
  • D$8$
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
    When two tuning forks (fork $1$ and fork $2$) are sounded simultaneously, $4$ beats per second are heard. Now, some tape is attached on the prong of the fork $2$. When the tuning forks are sounded again, $6$ beats per second are heard. If the frequency of fork $1$ is $200\, Hz$, then what was the original frequency of fork $2$? .... $Hz$
    View Solution
  • 2
    A sine wave of wavelength $\lambda $ is travelling in a medium. The minimum distance between the two particles, always having same speed, is
    View Solution
  • 3
    The figure represents the instantaneous picture of a longitudinal harmonic wave travelling along the negative $x$-axis. Identify the correct statement $(s)$ related to the movement of the points shown in the figure. The points moving opposite to the direction of propagation are
    View Solution
  • 4
    If in an experiment for determination of velocity of sound by resonance tube method using a tuning fork of $512 Hz$, first resonance was observed at $30.7 cm$ and second was obtained at $63.2 cm$, then maximum possible error in velocity of sound is .....$cm/sec$ (consider actual speed of sound in air is $332 m/s$)
    View Solution
  • 5
    Two similar open organ pipe of length $50\, cm$ and $50.5\, cm$ produce $3$ beats per second when sounded together. The velocity of sound in air is ........ $m/s$
    View Solution
  • 6
    It is possible to hear beats from the two vibrating sources of frequency
    View Solution
  • 7
    A wave travelling in positive $x-$direction with $A = 0.2\;m$ has a velocity of $360 \;m/sec.$ if $\lambda = 60\;m,$ then correct expression for the wave is
    View Solution
  • 8
    Two whistles $A$ and $B$ produces notes of frequencies $660 Hz$ and $596 Hz$ respectively. There is a listener at the mid-point of the line joining them. Now the whistle $B$ and the listener start moving with speed $30 m/s$ away from the whistle $A.$ If speed of sound be $330 m/s,$ how many beats will be heard by the listener
    View Solution
  • 9
    Which of the following equations represents a travelling wave ?
    View Solution
  • 10
    For a certain organ pipe, three successive resonance frequencies are observed at $425,595,$ and $765 \,Hz$ respectively, Taking the speed of sound in air to be $340 \,m / s$ the fundamental frequency of the pipe (in $Hz$ ) is .........
    View Solution