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.*
A transverse harmonic wave on a string is given by $y(x, t)=5 \sin (6 t+0.003 x)$ where $x$ and $y$ are in $cm$ and $t$ in $sec$. The wave velocity is $...........\,ms ^{-1}$.
A string vibrates according to the equation $y = 5\sin \,\left( {\frac{{2\pi x}}{3}} \right)\,\,\cos \,20\,\pi t$, where $x$ and $y$ are in $cm$ and $t$ in sec. The distance between two adjacent nodes is .... $cm$
A whistle emitting a loud sound of frequency $540 \,Hz$ is whirled in a horizontal circle of radius $2 \,m$ and at a constant angular speed of $15 \,rad / s$. The speed of sound is $330 \,m / s$. The ratio of the highest to the lowest frequency heard by a listener standing at rest at a large distance from the centre of the circle is
Source and observer both start moving simultaneously from origin, one along $x-$axis and the other along $y-$axis with speed of source = twice the speed of observer. The graph between the apparent frequency observed by observer $f$ and time $t$ would approximately be :
A string of length $1\, m$ and mass $5\, g$ is fixed at both ends. The tension in the string is $8.0\, N$. The string is set into vibration using an external vibrator of frequency $100\, Hz$. The separation between successive nodes on the string is close to .... $cm$
In a medium sound travels $2\, km$ in $3\, sec$ and in air, it travels $3 \,km$ in $10\, sec$. The ratio of the wavelengths of sound in the two media is