If $l_1$ and $l_2$ are the lengths of air column for the first and second resonance when a tuning fork of frequency $n$ is sounded on a resonance tube, then the distance of the displacement antinode from the top end of the resonance tube is:
Medium
Download our app for free and get started
If $l_{1}=\frac{\lambda}{4},$ and $l_{2}=\frac{3 \lambda}{4},$ and according to the image, displacement anti node from the top should be zero,
therefore,
distance $=\left(l_{2}-3 l_{1}\right) / 2=0$
answer $C$ is correct.
Download our appand 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
- 1A 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
- 2The tension of a stretched string is increased by $69\%$. In order to keep its frequency of vibration constant, its length must be increased by .... $\%$View Solution
- 3View SolutionVelocity of sound measured in hydrogen and oxygen gas at a given temperature will be in the ratio
- 4A travelling harmonic wave is represented by the equation $y(x, t) = 10^{-3}\,sin\,(50t + 2x)$, where $x$ and $y$ are in meter and $t$ is in seconds. Which of the following is a correct statement about the wave?View Solution
- 5The equation of a wave is given as $y = 0.07\sin (12\pi x - 3000\pi t)$. Where $x$ is in metre and $t$ in sec, then the correct statement isView Solution
- 6Two waves are propagating to the point $P$ along a straight line produced by two sources $A$ and $B$ of simple harmonic and of equal frequency. The amplitude of every wave at $P$ is $‘a’$ and the phase of $A$ is ahead by $\frac{\pi }{3}$ than that of $B$ and the distance $AP$ is greater than $BP$ by $50 cm.$ Then the resultant amplitude at the point $P$ will be, if the wavelength is $1$ meterView Solution
- 7A metal wire of linear mass density of $9.8\, g/m$ is stretched with a tension of $10 kg$ weight between two rigid supports $1$ metre apart. The wire passes at its middle point between the poles of a permanent magnet, and it vibrates in resonance when carrying an alternating current of frequency $n.$ The frequency $n$ of the alternating source is ..... $Hz$View Solution
- 8Two cars ${X}$ and ${Y}$ are approaching each other with velocities $36\; {km} / {h}$ and $72\; {km} / {h}$ respectively. The frequency of a whistle sound as emitted by a passenger in car ${X}$, heard by the passenger in car ${Y}$ is $1320 \;{Hz}$. If the velocity of sound in air is $340\; {m} / {s}$, the actual frequency of the whistle sound produced is ........ $Hz.$View Solution
- 9The phase difference between the two particles situated on both the sides of a node is ... $^o$View Solution
- 10If $\vec{u}$ is instantaneous velocity of particle and $\vec{v}$ is velocity of wave, thenView Solution