It is found that an increase in pressure of $100\, kPa$ causes a certain volume of water to decrease by $5 × 10^{-3}$ percent of its original volume. Then the speed of sound in the water is about .... $m/s$ (density of water $10^3 \,kg/m^3$)
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An organ pipe of length $L$ open at both ends is found to vibrate in its first harmonic when sounded with a tuning fork of $480\, Hz$. What should be the length of a pipe closed at one end, so that it also vibrates in its first harmonic with the same tuning fork ?
In a gultar, two strings $A$ and $B$ made of same materlal are slightly out of tune and produce beats of frequency $6\, Hz$. When tension in $B$ is slightly decreased, the beat frequency increases to $7 \,Hz$. If the frequency of $A$ is $530\, Hz ,$ the orlginal frequency of $B$ will be $.........Hz$
A $1 cm$ long string vibrates with fundamental frequency of $256\, Hz$. If the length is reduced to $\frac{1}{4}cm$ keeping the tension unaltered, the new fundamental frequency will be
A $SONAR$ system fixed in a submarine operates at a frequency $40.0\; kHz$. An enemy submarine moves towards the $SONAR$ with a speed of $360 \;km h ^{-1}$. What is the frequency (in $Hz$) of sound reflected by the submarine? Take the speed of sound in water to be $1450\; m s ^{-1}$
A vehicle with a horn of frequency $n$ is moving with a velocity of $30\, m/s$ in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency $n + {n_1}$. Then (if the sound velocity in air is $300\, m/s$)
A standing wave is formed by the superposition of two waves travelling in opposite directions. The transverse displacement is given by $y\left( {x,t} \right) = 0.5\sin\, \left( {\frac{{5\pi }}{4}x} \right)\,\cos\, \left( {200\,\pi t} \right)$. What is the speed of the travelling wave moving in the positive $x$ direction .... $m/s$ ? ($x$ and $t$ are in meter and second, respectively.)
The wave function of a pulse is given by $y=\frac{5}{(4 x+6 t)^2}$, where $x$ and $y$ are in metre and $t$ is in second. The velocity of pulse is ......... $m / s$