JEE Mains · Physics · STD 11 - 14. waves and sound
A tuning fork vibrates with frequency \(256\, Hz\) and gives one beat per second with the third normal mode of vibration of an open pipe . What is the length of the pipe? ... \(cm\) (Speed of sound of air is \(340\, ms^{-1}\))
- A \(190\)
- B \(180\)
- C \(220\)
- D \(200\)
Answer & Solution
Correct Answer
(D) \(200\)
Step-by-step Solution
Detailed explanation
According to question, tuning fork gives \(1\, beat/second\) with \((N)\, 3^{rd}\) normal mode. Therefore, organ pipe will have frequency \(\left( {256 \pm 1} \right)\,Hz\). In open organ pipe, frequency \(\mathrm{n}=\frac{\mathrm{NV}}{2 \ell}\) or,…
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