$Assertion :$ The change in air pressure affects the speed of sound.
$Reason :$ The speed of sound in gases is proportional to the square of pressure.
$Reason :$ The speed of sound in gases is proportional to the square of pressure.
AIIMS 2008, Easy
Download our app for free and get started
Speed of sound in cases is independent of pressure because $v = \sqrt {\frac{{\gamma P}}{P}} $ At constant temperature, if $P$ changes then $\rho $ also changes in such a way that the ratio $\frac{P}{\rho }$ remains constant. Hence there is no effect of the pressure change on the speed of sound.
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
- 1View SolutionWhich of the following is not the transverse wave
- 2A train whistling at constant frequency is moving towards a station at a constant speed $V$ . The train goes past a stationary observer on the station. The frequency $n'$ of the sound as heard by the observer is plotted as a function of time $t$ (Fig.) . Identify the expected curveView Solution
- 3A tuning fork vibrates with $2$ beats in $0.04$ second. The frequency of the fork is .... $Hz$View Solution
- 4A suspension bridge is to be built across valley where it is known that the wind can gust at $5 \,s$ intervals. It is estimated that the speed of transverse waves along the span of the bridge would be $400 \,m / s$. The danger of resonant motions in the bridge at its fundamental frequency would be greater if the span had a length of .......... $m$View Solution
- 5Two waves of frequencies $20 Hz$ and $30 Hz.$ Travels out from a common point. The phase difference between them after $0.6 sec$ isView Solution
- 6Two wires are fixed in a sonometer. Their tensions are in the ratio $8 : 1$. The lengths are in the ratio $36:35.$ The diameters are in the ratio $4 : 1$. Densities of the materials are in the ratio $1 : 2$. If the lower frequency in the setting is $360 Hz.$ the beat frequency when the two wires are sounded together isView Solution
- 7View SolutionThe Doppler's effect is applicable for
- 8The equation of a progressive wave is $y = a\,\sin \,\left( {\frac{\pi }{2}x - 200\pi t} \right)$ . The frequency of the wave will be .... $Hz$View Solution
- 9The equation $y = A{\cos ^2}\left( {2\pi \;nt - 2\pi \frac{x}{\lambda }} \right)$ represents a wave withView Solution
- 10The phase difference between two waves, represented by ${y_1} = {10^{ - 6}}\sin \left\{ {100t + \left( {x/50} \right) + 0.5} \right\}\ m$ , ${y_2} = {10^{ - 6}}\cos \left\{ {100t + \left( {\frac{x}{{50}}} \right)} \right\}\ m$ where $x$ is expressed in metres and $t$ is expressed in seconds, is approximately .... $radians$View Solution