Tuning Fork Vibrations – Rankers Physics

Standing Wave in String and Organ Pipe: Practice Problem & Solution

Assertion (A): Both arms of a tuning fork vibrate with the same frequency. Reason (R): The two arms of a tuning fork vibrate in phase.  
(1) Both (A) & (R) are true and the (R) is the correct explanation of the (A)
(2) Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(3) (A) is true but (R) is false
(4) Both (A) and (R) are false

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Standing Wave in String and Organ Pipe. Understanding the underlying formula is key to arriving at the correct answer below:

Both arms of a tuning fork vibrate as a single system, thus at the same frequency. Assertion (A) is true.

For efficient sound production, the arms vibrate 180 degrees out of phase (in opposite directions), not in phase. Therefore, Reason (R) is false.

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