waves

Question: A small source of sound moves on a circle as shown in the figure and an observer is standing on $O$. Let ${{n}_{1}},\ {{n}_{2}}$ and ${{n}_{3}}$be the frequencies heard when the source is at $A,\ B$ and $C$ respectively. Then

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1) ${{n}_{1}}>{{n}_{2}}>{{n}_{3}}$

2) ${{n}_{2}}>{{n}_{3}}>{{n}_{1}}$

3) ${{n}_{1}}={{n}_{2}}>{{n}_{3}}$

4) ${{n}_{2}}>{{n}_{1}}>{{n}_{3}}$

Solution:

Explanation: No Explanation

Doppler Effect

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