waves

Related Questions

• The relation between time and displacement for two particles is given by ${{y}_{1}}=0.06\sin 2\pi (0.04t+{{\varphi }_{1}})$, ${{y}_{2}}=0.03\sin 2\pi (1.04t+{{\varphi }_{2}})$. The ratio of the intensity of the waves produced by the vibrations of the two particles will be

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• The number of waves contained in unit length of the medium is called

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• A source is moving towards an observer with a speed of 20 m/s and having frequency of 240 Hz. The observer is now moving towards the source with a speed of 20 m/s. Apparent frequency heard by observer, if velocity of sound is 340 m/s, is

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• A siren placed at a railway platform is emitting sound of frequency 5 kHz. A passenger sitting in a moving train A records a frequency of 5.5 kHz while the train approaches the siren. During his return journey in a different train B he records a frequency of 6.0 kHz while approaching the same siren. The ratio of the velocity of train B to that of train A is

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• A source and an observer move away from each other with a velocity of 10 m/s with respect to ground. If the observer finds the frequency of sound coming from the source as 1950 Hz, then actual frequency of the source is (velocity of sound in air = 340 m/s)

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