waves

Related Questions

• The stationary wave produced on a string is represented by the equation $y=5\cos (\pi x/3)\sin 40\pi t$. Where x and y are in cm and $t$ is in seconds. The distance between consecutive nodes is

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• A table is revolving on its axis at 5 revolutions per second. A sound source of frequency 1000 Hz is fixed on the table at 70 cm from the axis. The minimum frequency heard by a listener standing at a distance from the table will be (speed of sound = 352 m/s)

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• There is a destructive interference between the two waves of wavelength $\lambda$ coming from two different paths at a point. To get maximum sound or constructive interference at that point, the path of one wave is to be increased by

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• The Doppler's effect is applicable for

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• A car sounding a horn of frequency 1000 Hz passes an observer. The ratio of frequencies of the horn noted by the observer before and after passing of the car is $11 : 9$. If the speed of sound is $v$, the speed of the car is

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