waves

Related Questions

• 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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• Two open organ pipes give 4 beats/sec when sounded together in their fundamental nodes. If the length of the pipe are 100 cm and 102.5 cm respectively, then the velocity of sound is :

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• In a plane progressive wave given by $y=25\cos (2\pi t-\pi x)$, the amplitude and frequency are respectively

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• 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

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• A device used for investigating the vibration of a fixed string or wire is

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