waves

Related Questions

• The frequency of transverse vibrations in a stretched string is 200 Hz. If the tension is increased four times and the length is reduced to one-fourth the original value, the frequency of vibration will be

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• The phase difference between two waves represented by ${{y}_{1}}={{10}^{-6}}\sin [100\,t+(x/50)+0.5]m$ and ${{y}_{2}}={{10}^{-6}}\cos \,[100\,t+(x/50)]m$ where $x$ is expressed in metres and $t$ is expressed in seconds, is approximately

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• A string in musical instrument is 50 cm long and its fundamental frequency is 800 Hz. If a frequency of 1000 Hz is to be produced, then required length of string is

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• Two waves having equations ${{x}_{1}}=a\sin (\omega \,t+{{\varphi }_{1}})$, ${{x}_{2}}=a\sin \,(\omega \,t+{{\varphi }_{2}})$. If in the resultant wave the frequency and amplitude remain equal to those of superimposing waves. Then phase difference between them is

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• A motor car blowing a horn of frequency 124 vib/sec moves with a velocity 72 km/hr towards a tall wall. The frequency of the reflected sound heard by the driver will be (velocity of sound in air is 330 m/s)

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