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A vibrating string of certain length l under a tension T resonates with a mode corresponding to the first overtone (third harmonic) of an air column of length 75 cm inside a tube closed at one end. The string also generates 4 beats per second when excited along with a tuning fork of frequency n. Now when the tension of the string is slightly increased the number of beats reduces to 2 per second. Assuming the velocity of sound in air to be 340 m/s, the frequency n of the tuning fork in Hz is
Options
(a) 344
(b) 336
(c) 117.3
(d) 109.3
Correct Answer:
344
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A condenser of 250 μF is connected in parallel to a coil of inductance of 0.16 mH
- A particle of mass M is suited at the centre of a spherical shell of same mass and radius
- Energy bands in solids are a consequence of
- For the normal eye, the cornea of eye provides a converging power of 40D
- If the force exerted by an electric dipole on a charge q at a distance of 1 m is F
Topics: Waves (80)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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