Two similar open organ pipe of length $50\, cm$ and $50.5\, cm$ produce $3$ beats per second when sounded together. The velocity of sound in air is ........ $m/s$
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An ideal gas is in thermodynamic equilibrium. The number of degrees of freedom of a molecule of the gas in $n$. The internal energy of one mole of the gas is $U_n$ and the speed of sound in the gas is $v_n$. At a fixed temperature and pressure, which of the following is the correct option?
If velocity of sound in a gas is $360\, m/s$ and the distance between a compression and the nearest rarefaction is $1m$, then the frequency of sound is ..... $Hz$
A pipe $30 cm$ long is open at both ends. Which harmonic mode of the pipe is resonantly excited by a $1.1 kHz$ source ? (Take speed of sound in air =$ 330 ms^{-1}$)
An observer standing near the sea shore observes $54$ waves per minute. If the wavelength of the water wave is $10m$ then the velocity of water wave is .... $ms^{-1}$
An observer moves towards a stationary source of sound with a velocity one-fifth of the velocity of sound. The precentage change in the apparent frequency is ..... $\%$
Two strings $X$ and $Y$ of a sitar produce a beat frequency $4 Hz$. When the tension of the string $Y$ is slightly increased the beat frequency is found to be $2 Hz.$ If the frequency of $X$ is $300 Hz,$ then the original frequency of $Y$ was .... $Hz$
Two tuning forks $A$ and $B$ give $4$ beats per second. The frequency of $A$ is $256 Hz$. On loading $B$ slightly, we get $5$ beats in $2$ seconds. The frequency of $B$ after loading is .... $Hz$