Standing stationary waves can be obtained in an air column even if the interfering waves are
Easy
Download our app for free and get startedPlay store
(b)
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 horizontal stretched string, fixed at two ends, is vibrating in its fifth harmonic according to the equation, $y(x$, $t )=(0.01 \ m ) \sin \left[\left(62.8 \ m ^{-1}\right) x \right] \cos \left[\left(628 s ^{-1}\right) t \right]$. Assuming $\pi=3.14$, the correct statement$(s)$ is (are) :

    $(A)$ The number of nodes is $5$ .

    $(B)$ The length of the string is $0.25 \ m$.

    $(C)$ The maximum displacement of the midpoint of the string its equilibrium position is $0.01 \ m$.

    $(D)$ The fundamental frequency is $100 \ Hz$.

    View Solution
  • 2
    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
  • 3
    The length of the wire shown in figure between the pulleys is $1.5\, m$ and its mass is  $12.0\,g$. The frequency of vibration with which the wire vibrates in three loops forming antinode at the mid point of the wire is $(g = 9.8 \,m/s^2)$
    View Solution
  • 4
    A student performed the experiment to measure the speed of sound in air using resonance air-column method. Two resonances in the air-column were obtained by lowering the water level. The resonance with the shorter air-column is the first resonance and that with the longer air-column is the second resonance. Then,

    $(A)$ the intensity of the sound heard at the first resonance was more than that at the second resonance

    $(B)$ the prongs of the tuning fork were kept in a horizontal plane above the resonance tube

    $(C)$ the amplitude of vibration of the ends of the prongs is typically around $1 \mathrm{~cm}$

    $(D)$ the length of the air-column at the first resonance was somewhat shorter than $1 / 4$ th of the wavelength of the sound in air

    View Solution
  • 5
    A resonance tube is old and has jagged end. It is still used in the laboratory to determine velocity of sound in air. A tuning fork of frequency $512\,Hz$ produces first resonance when the tube is filled with water to a mark $11\,cm$ below a reference mark, near the open end of the tube. The experiment is repeated with another fork of frequency $256\,Hz$ which produces first resonance when water reaches a mark $27\,cm$ below the reference mark. The velocity of sound in air, obtained in the experiment, is close to .... $ms^{-1}$
    View Solution
  • 6
     A small speaker delivers $2\, W$ of audio output. At what distance from the speaker will one detect $120\, dB$ intensity sound ... $cm$ ? [Given reference intensity of sound as $10^{-12}\,W/m^2$]
    View Solution
  • 7
    In an experiment to determine the velocity of sound in air at room temperature using a resonance is observed when the air column has a length of $20.0 \,cm$ for a tuning fork of frequency $400 \,Hz$ is used. The velocity of the sound at room temperature is $336 \,ms ^{-1}$. The third resonance is observed when the air column has a length of ......... $cm$
    View Solution
  • 8
    In the standing wave shown, particles at the positions $A$ and $B$ have a phase difference of
    View Solution
  • 9
    Two uniform strings of mass per unit length $\mu$ and $4 \mu$, and length $L$ and $2 L$, respectively, are joined at point $O$, and tied at two fixed ends $P$ and $Q$, as shown in the figure. The strings are under a uniform tension $T$. If we define the frequency $v_0=\frac{1}{2 L} \sqrt{\frac{T}{\mu}}$, which of the following statement($s$) is(are) correct?

    $(A)$ With a node at $O$, the minimum frequency of vibration of the composite string is $v_0$

    $(B)$ With an antinode at $O$, the minimum frequency of vibration of the composite string is $2 v_0$

    $(C)$ When the composite string vibrates at the minimum frequency with a node at $O$, it has $6$ nodes, including the end nodes

    $(D)$ No vibrational mode with an antinode at $O$ is possible for the composite string

    View Solution
  • 10
    A police car with a siren of frequency $8$ $kHz$ is moving with uniform velocity $36$ $km/hr$ towards a tall building which reflects the sound waves. The speed of sound in air is $320$ $m/s$. The frequency of the siren heard by the car driver is .... $kHz$
    View Solution