The distance between two consecutive crests in a wave train produced in a string is $5 cm.$ If $2$ complete waves pass through any point per second, the velocity of the wave is ..... $cm/sec$
Easy
Download our app for free and get started
(a) $v = n\lambda = 2 \times 5 = 10\,cm/sec$
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 sounding body of negligible dimension emitting a frequency of $150\,\, Hz$ is dropped from a height. During its fall under gravity it passes near a balloon moving up with a constant velocity of $2m/s$ one second after it started to fall.The difference in the frequency observed by the man in balloon just before and just after crossing the body will be : (Given that -velocity of sound $= 300m/s; g = 10m/s^2$)View Solution
- 2A wave is represented by $x=4 \cos \left(8 t-\frac{y}{2}\right)$, where $x$ and $y$ are in metre and $t$ in second. The frequency of the wave $\left(\right.$ in $^{-1}$ ) is .........View Solution
- 3The amplitude of a wave represented by displacement equation $y = \frac{1}{{\sqrt a }}\sin \omega t \pm \frac{1}{{\sqrt b }}\cos \omega t$ will beView Solution
- 4In a resonance column, first and second resonances are obtained at depths $22.7\, cm$ and $70.2\, cm .$ The third resonance will be obtained at a depth (in $cm$)View Solution
- 5A wave motion has the function $y = {a_0}\sin (\omega \,t - kx)$. The graph in figure shows how the displacement $y$ at a fixed point varies with time $t$. Which one of the labelled points shows a displacement equal to that at the position $x = \frac{\pi }{{2k}}$ at time $t = 0$View Solution
- 6A string $2.0\, m$ long and fixed at its end is driven by a $240\, Hz$ vibrator. The string vibrates in its third harmonic mode. The speed of the wave and its fundamental frequency isView Solution
- 7Two opens organ pipes of length $50\, cm$ and $50.5\, cm$ produce three beats. Then, the velocity of sound is ..... $m/s$View Solution
- 8View SolutionIf the temperature increases, then what happens to the frequency of the sound produced by the organ pipe
- 9The temperature at which the speed of sound in air becomes double of its value at ${0^o}C$ is ...... $K$View Solution
- 10View SolutionWhen an aeroplane attains a speed higher than the velocity of sound in air, a loud bang is heard. This is because