A string fixed at both ends is vibrating in the lowest mode of vibration for which a point at qu...

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A string fixed at both ends is vibrating in the lowest mode of vibration for which a point at quarter of its length from one end is a point of maximum displacement. The frequency of vibration in this mode is
\( \mathrm{P} \) \( 100 \mathrm{~Hz} \). What will be the frequency emitted when it vibrates in the next mode such that this point is again a noint of maximum disnlacement?
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