waves

Related Questions

• The source producing sound and an observer both are moving along the direction of propagation of sound waves. If the respective velocities of sound, source and an observer are v, ${{v}_{s}}$ and ${{v}_{o}}$, then the apparent frequency heard by the observer will be (n = frequency of sound)

  ---

• When an engine passes near to a stationary observer then its apparent frequencies occurs in the ratio 5/3. If the velocity of engine is

  ---

• Frequency range of the audible sounds is

  ---

• An empty vessel is partially filled with water, then the frequency of vibration of air column in the vessel

  ---

• The equation of a wave motion (with $t$ in seconds and $x$ in metres) is given by $y=7\sin \,\left[ 7\pi t-0.4\pi x+\frac{\pi }{3} \right]$. The velocity of the wave will be

  ---