A source of sound emits sound waves at freque | vedclass

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(C) According to the Doppler effect,the apparent frequency $f$ heard by an observer moving towards a source that is also moving towards the observer i

Vedclass · Accepted Answer

graph $A$ with slope $= \frac{f_0}{v - v_s}$

Vedclass · Answer

(C) According to the Doppler effect,the apparent frequency $f$ heard by an observer moving towards a source that is also moving towards the observer is given by:$f = \left( \frac{v + v_0}{v - v_s} \right) f_0$Rearranging this equation to express $f$ as a function of $v_0$:$f = \left( \frac{f_0}{v - v_s} \right) v_0 + \frac{v f_0}{v - v_s}$This equation is in the form of a linear equation $y = mx + c$,where $y = f$ and $x = v_0$.The slope $m$ of the graph is $\frac{f_0}{v - v_s}$.Since the frequency $f$ increases linearly with $v_0$,graph $A$ represents this linear relationship correctly.Therefore,option $(c)$ is the correct answer.

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