A tuning fork is in resonance with a vibrating string under tension. When the tuning fork is moved with a certain velocity, 2 beats per second are heard. If the tension is increased, the beats disappe

Question

A tuning fork is in resonance with a vibrating string under tension. When the tuning fork is moved with a certain velocity, 2 beats per second are heard. If the tension is increased, the beats disappear again. The direction of motion of the tuning fork is

TestHub · Accepted Answer

When tension is increased the frequency of the string increases from n to n + ∆ n . This means apparent frequency of the tuning fork has also increased from n to n + ∆ n . So the tuning fork is moving towards the string.

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