A source of sound of frequency $500 Hz$ is moving towards an observer with velocity $30 m/s$. The speed of sound is $330 m/s$. the frequency heard by the observer will be .... $Hz$
Medium
Download our app for free and get started
(a) $n' = n\,\left( {\frac{v}{{v - {v_S}}}} \right) \Rightarrow n' = 500\,\left( {\frac{{330}}{{330 - 30}}} \right) = 550 Hz$.
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
- 1Two waves of amplitudes $A_0$ and $x A_0$ pass through a region. If $x > j _0$ the difference in the maximum and minimum resultant amplitude possible isView Solution
- 2View SolutionA closed pipe and an open pipe have their first overtones identical in frequency. Their lengths are in the ratio
- 3Two waves are represented byView Solution
$y_1=5 \sin 2 \pi(75 t-0.25 x)$
$y_2=10 \sin 2 \pi(150 t-0.50 x)$
The intensity ratio $\frac{I_1}{I_2}$ of the two waves is
- 4The pattern of standing waves formed on a stretched string at two instants of time (extreme,mean) are shown in figure. The velocity of two waves superimposing to form stationary waves is $360\ ms^{-1}$ and their frequencies are $256\ Hz$. Which is not possible value of $t$ (in $sec$)View Solution
- 5A uniform wire of length $L$ and mass $M$ is stretched between two fixed points, keeping tension $F$. A sound of frequency $m$ is impressed on it. Then the maximum vibrational energy is existing in the wire when $\mu $ =View Solution
- 6Three sound waves of equal amplitudes have frequencies $(n - 1 ), n, (n + 1 ).$ They superimpose to give beats. The number of beats produced per second will beView Solution
- 7A man sets his watch by a whistle that is $2\, km$ away. How much will his watch be in error. (speed of sound in air $330\, m/sec$)View Solution
- 8The $(x, y)$ coordinates of the corners of a square plate are $(0, 0), (L, 0), (L, L)$ and $(0, L).$ The edges of the plate are clamped and transverse standing waves are set up in it. If $u(x, y)$ denotes the displacement of the plate at the point $(x, y)$ at some instant of time, the possible expression(s) for $u$ is(are) ($a =$ positive constant)View Solution
- 9View SolutionLearned Indian classical vocalists do not like the accompaniment of a harmonium because
- 10A progressive wave travelling along the positive $x-$ direction is represented by $y(x, t) = A\,sin\,\left( {kx - \omega t + \phi } \right)$. Its snapshot at $t = 0$ is given in the figure For this wave, the phase $\phi $ isView Solution
