An observer is moving towards the stationary source of sound, then
  • A
    Apparent frequency will be less than the real frequency
  • B
    Apparent frequency will be greater than the real frequency
  • C
    Apparent frequency will be equal to real frequency
  • D
    Only the quality of sound will change
Easy
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
    The equation of a wave is represented by $y = {10^{ - 4}}\sin \,\left[ {100\,t - \frac{x}{{10}}} \right].$ The velocity of the wave will be .... $m/s$
    View Solution
  • 2
    The minimum audible wavelength at room temperature is about
    View Solution
  • 3
    A uniform metal wire of density $\rho $, cross-sectional area $A$ and length $L$ is stretched with a tension $T$. The speed of transverse wave in the wire is given by
    View Solution
  • 4
    A closed organ pipe $150 \mathrm{~cm}$ long gives $7$ beats per second with an open organ pipe of length $350 \mathrm{~cm}$, both vibrating in fundamental mode. The velocity of sound is_________ $\mathrm{m} / \mathrm{s}$.
    View Solution
  • 5
    A string is stretched between fixed points separated by $75.0\,\, cm.$ It is observed to have resonant frequencies of $420\,\, Hz$ and $315\,\, Hz$. There are no other resonant frequencies between these two. The lowest resonant frequency for this string is .... $Hz$
    View Solution
  • 6
    Two wires are in unison. If the tension in one of the wires is increased by $2\%, 5$ beats are produced per second. The initial frequency of each wire is  .... $Hz$
    View Solution
  • 7
    A transverse wave of frequency $500 \,Hz$ and speed $100 \,m / s$ is travelling in the positive $x$-direction on a long string. At time $t=0 \,s$, the displacements at $x=0.0 \,m$ and at $x=0.25 \,m$ are $0.0 \,m$ and $0.02 \,m$, respectively. The displacement at $x=0.2 \,m$ at $t=5 \times 10^{-4} s$ is ............ $m$
    View Solution
  • 8
    Two sound waves (expressed in $CGS$ units) given by ${y_1} = 0.3\sin \frac{{2\pi }}{\lambda }(vt - x)$ and ${y_2} = 0.4\sin \frac{{2\pi }}{\lambda }(vt - x + \theta )$ interfere. The resultant amplitude at a place where phase difference is $\pi /2$ will be .... $ cm$
    View Solution
  • 9
    A narrow tube is bent in the form of a circle of radius $R,$ as shown in the figure. Two small holes $S$ and $D$ are made in the tube at the positions right angle to each other. A source placed at $S$ generated a wave of intensity $I_0$ which is equally divided into two parts : One part travels along the longer path, while the other travels along the shorter path. Both the part waves meet at the point $D$ where a detector is placed The maximum intensity produced at $D$ is given by
    View Solution
  • 10
    Statement$-1:$ Two longitudinal waves given by equations $y _{1}( x , t )=2 a \sin (\omega t - kx )$ and $y _{2}( x , t )= a \sin (2 \omega t -2 kx )$ will have equal intensity.

    Statement$-2:$ Intensity of waves of given frequency in same medium is proportional to square of amplitude only.

    View Solution