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 ......... $m / s$
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.*
Two strings $X$ and $Y$ of a sitar produce a beat frequency $4 Hz$. When the tension of the string $Y$ is slightly increased the beat frequency is found to be $2 Hz.$ If the frequency of $X$ is $300 Hz,$ then the original frequency of $Y$ was .... $Hz$
In the experiment for the determination of the speed of sound in air using the resonance column method, the length of the air column that resonates in the fundamental mode, with a tuning fork is $0.1\,m$. when this length is changed to $0.35\,m,$ the same tuning fork resonates with the first overtone. Calculate the end correction .... $m$
A mass of $20\ kg$ is hanging with support of two strings of same linear mass density. Now pulses are generated in both strings at same time near the joint at mass. Ratio of time, taken by a pulse travel through string $1$ to that taken by pulse on string $2$ is
An observer while going on scooter hears sound of two sirens of same frequencies from two opposite directions. If he travels along the direction of one of the siren, then he
A siren emitting a sound of frequency $800\,\, Hz$ moves away from an observer towards a cliff at a speed of $15 \,\,m s^{-1}$. Then, the frequency of sound that the observer hears in the echo reflected from the cliff is .... $Hz$
(Take velocity of sound in air $= 330\,\, m s^{-1}$)
The source producing sound and an observer both are moving along the direction of propagation of sound waves. If the respective velocities of sound, source and an observer are $v, {v_s}$ and ${v_o}$, then the apparent frequency heard by the observer will be ($n =$ frequency of sound)
A source of sound $S$ of frequency $500 Hz$ situated between a stationary observer $O$ and a wall $W$, moves towards the wall with a speed of $2 m/s$. If the velocity of sound is $332 m/s$, then the number of beats per second heard by the observer is (approximately)
The frequency of a tunning fork is $384$ per second and velocity of sound in air is $352 m/s$. How far the sound has traversed while fork completes $36$ vibration .... $m$
The transverse displacement in a streched string is given by
$y = 0.06 \sin \, \left( {\frac{{2\pi }}{3}x} \right)\cos \,(120\pi t)$
where $x$ and $y$ are in $m$ and $t$ is in $s$. The length of the string is $1.5\, m$ and its mass is $3.0 \times 10^{-2} \,kg$, then tension in string is ..... $N$