If the wave equation $y = 0.08\sin \frac{{2\pi }}{\lambda }(200t - x)$ then the velocity of the wave will be
A$400\sqrt 2 $
B$200\sqrt 2 $
C$400$
D$200$
Easy
Download our app for free and get started
D$200$
d (d)Comparing with standard wave equation
$y = a\sin \frac{{2\pi }}{\lambda }(vt - x)$, we get, $v = 200\,m/s.$
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.*
A second harmonic has to be generated in a string of length $l$ stretched between two rigid supports. The point where the string has to be plucked and touched are
A fork of frequency $256\, Hz$ resonates with a closed organ pipe of length $25.4\, cm$. If the length of pipe be increased by $2\, mm$, the number of beats/sec. will be
A sinusoidal progressive wave is generated in a string. It’s equation is given by $y = (2\,\, mm) sin (2\pi x - 100 \pi t + \pi /3)$. The time when particle at $x = 4$ $m$ first passes through mean position, will be
A wave is given by $y = 3\sin 2\pi \left( {\frac{t}{{0.04}} - \frac{x}{{0.01}}} \right)$, where $y$ is in $cm$. Frequency of wave and maximum acceleration of particle will be
A signal of $0.1\, kW$ is transmitted in a cable. The attenuation of cable is $-5 \,dB$ per $km$ and cable length is $20\, km$. The power received at receiver is $10^{-x} \, W$. The value of $x$ is ....... .
$\left[\right.$ Gain in $\left. dB =10 \log _{10}\left(\frac{ P _{0}}{ P _{i}}\right)\right]$
A train moves towards a stationary observer with speed $34 m/s$. The train sounds a whistle and its frequency registered by the observer is ${f_1}$. If the train’s speed is reduced to $17\, m/s$, the frequency registered is ${f_2}$. If the speed of sound is 340 m/s then the ratio ${f_1}/{f_2}$ is