A source is moving along a circle given by equation ${\mathrm{x}}^2+{\mathrm{y}}^2={\mathrm{R}}^2$,  with constant speed $\mathrm{v}=\frac{330\mathrm{\pi }}{6\sqrt{3}}\mathrm{m}/\mathrm{s}$ in anti-clockwise sense, a detector is at rest of point (2R, 0). If the frequency emitted by the source is f and the speed of sound,$\mathrm{c}=330 \mathrm{m}/\sec$. Then

The maximum frequency recorded by the detector is $\frac{6\sqrt{3}}{(6\sqrt{3}-\mathrm{\pi })}\mathrm{f}$

The position of source when the detector records the maximum frequency is $\left[\frac{{\displaystyle \mathrm{R}}}{{\displaystyle 2}},-\frac{{\displaystyle \sqrt{3}\mathrm{R}}}{{\displaystyle 2}}\right]$

The coordinate of the source when the detector records minimum frequency is $\left[\frac{{\displaystyle \mathrm{R}}}{{\displaystyle 2}},\frac{{\displaystyle \sqrt{3}\mathrm{R}}}{{\displaystyle 2}}\right]$

The minimum frequency recorded by the detector is $\frac{6\sqrt{3}}{\mathrm{\pi }+6\sqrt{3}}\mathrm{f}$