The length of a sonometer wire AB is 100 cm. Where should the two bridges be placed from end A to divide the wire in three segments whose fundamental frequencies are the ratio of 1:2:3?
60 cm, 90 cm
For a wire, Therefore, frequencies will be in the ratio of 1:2:3 if lengths are in the ratio of the lengths are in the ratio of 6:3:1. Total length = 100 cm. Therefore L1 = 60 cm, L2 = 30 cm and L1 = 10 cm.
An organ pipe P1, closed at one end vibrating in its first harmonic and another pipe P2, open at both ends vibrating in its third harmonic, are in resonance with a given tuning fork. The ratio of the lengths of P1 and P2is
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The ratio of intensities I2/I1 will be
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A toothed wheel is rotated at 120 r.p.m. A post card is placed against the teeth. How many teeth must the wheel have to produce a note whose pitch is the same as that of a tuning fork of frequency 256 Hz?