Two tuning forks A and B vibrating simultaneously produce $$5$$ beats. Frequency of B is $$512$$. It is seen that if one arm of A is filed, then the number of beats increases. Frequency of A will be

Question

Infinity Learn · Accepted Answer

After filling frequency increases, so  nA decreases $$($$↓$$)$$. Also it is given that beat frequency increases (i$$.e., x ↑$$)  Hence nA↓ – nB  $$=$$ x↑        ... (i)       →        Correct           nB  – nA↑ $$=$$ x↑        ... (ii)       →        Wrong⇒ nA $$=$$ nB $$+$$ x $$=$$ $$512$$ $$+$$ $$5$$ $$=$$ $$517$$ Hz.

Two tuning forks A and B vibrating simultaneously produce 5 beats. Frequency of B is 512. It is seen that if one arm of A is filed, then the number of beats increases. Frequency of A will be

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