Which of the following statements is wrong
Easy
Download our app for free and get started
(d)Air is more rarer for sound to travel as compared to vacuum.
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 wave equation is given as $y = cos\,\,(500t - 70x),$ where $y$ is in $mm$, $x$ in $m$ and $t$ is in $sec$.View Solution
- 2The ends of a stretched wire of length $L$ are fixed at $x = 0$ and $x = L.$ In one experiment, the displacement of the wire is ${y_1} = A\sin (\pi x/L)\sin \omega t$ and energy is ${E_1}$, and in another experiment its displacement is ${y_2} = A\sin (2\pi x/L)\sin 2\omega t$ and energy is ${E_2}$. ThenView Solution
- 3A motorcyclist going around a circular track of radius $50\ m$ with a speed of $25\ m/s$ , is at a point $X$. A static siren at $Y$ is emitting sound of frequency $n$. How many times (approximately) in an hour will the motor cyclist hear the sound of actual frequency $Y$ ?View Solution
- 4View SolutionWith what velocity an observer should move relative to a stationary source so that he hears a sound of double the frequency of source
- 5View SolutionThe loudness and pitch of a sound depends on
- 6The equation of a progressive wave is $y = 8\sin \left[ {\pi \left( {\frac{t}{{10}} - \frac{x}{4}} \right) + \frac{\pi }{3}} \right]$. The wavelength of the wave is .... $m$View Solution
- 7In a wave motion $y = a\sin (kx - \omega t)$, $y$ can representView Solution
- 8A siren placed at a railway platform is emitting sound of frequency $5 kHz$. A passenger sitting in a moving train $A$ records a frequency of $5.5 kHz$ while the train approaches the siren. During his return journey in a different train $B$ he records a frequency of $6.0 kHz$ while approaching the same siren. The ratio of the velocity of train $B$ to that of train $A$ isView Solution
- 9A firecracker exploding on the surface of a lake is heard as two sounds a time interval $t$ apart by a man on a boat close to water surface. Sound travels with a speed $u$ in water and a speed $v$ in air. The distance from the exploding firecracker to the boat isView Solution
- 10In a test of subsonic Jet flies over head at an altitude of $100\,\, m$. The sound intensity on the ground as the Jet passes overhead is $160 \,\,dB$. At what altitude should the plane fly so that the ground noise is not greater than $120\,\, dB.$View Solution