waves

Related Questions

• A whistle giving out 450 Hz approaches a stationary observer at a speed of 33 m/s. The frequency heard by the observer in Hz is

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• If the wave equation $y=0.08\sin \frac{2\pi }{\lambda }(200t-x)$ then the velocity of the wave will be

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• If two waves having amplitudes $2A$ and $A$ and same frequency and velocity, propagate in the same direction in the same phase, the resulting amplitude will be

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• A source of sound of frequency 600 Hz is placed inside water. The speed of sound in water is 1500 m/s and in air is 300 m/s. The frequency of sound recorded by an observer who is standing in air is

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• A cylindrical tube, open at both ends, has a fundamental frequency ${{f}_{0}}$ in air. The tube is dipped vertically into water such that half of its length is inside water. The fundamental frequency of the air column now is

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