1.

In the figure shown the wave speed is v. The velocity of car is \[{{v}_{0}}\]. The beat frequency for the observer will be

A. \[\frac{2{{f}_{0}}v{{v}_{0}}}{{{v}^{2}}+v_{0}^{2}}\]
B. \[\frac{2{{f}_{0}}{{v}^{2}}}{{{v}^{2}}-v_{0}^{2}}\]
C. \[\frac{2{{f}_{0}}v{{v}_{0}}}{{{v}^{2}}-{{v}_{0}}^{2}}\]
D. \[\frac{{{f}_{0}}v{{v}_{0}}}{{{v}^{2}}-{{v}_{0}}^{2}}\]
Answer» D. \[\frac{{{f}_{0}}v{{v}_{0}}}{{{v}^{2}}-{{v}_{0}}^{2}}\]


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