A car sounding a horn of frequency $$1000 \mathrm{~Hz}$$ passes a stationary observer. The ratio of frequencies of the horn noted by the observer before and after passing the car is $$11: 9$$. If the speed of sound is '$$v$$', the speed of the car is
- A$$\mathrm{V}$$
- B$$\frac{\mathrm{v}}{2}$$
- C$$\frac{\mathrm{v}}{5}$$
- D$$\frac{\mathrm{v}}{10}$$
✓ Correct answer: D
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