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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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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A spring of spring constant 5 x 10³ N/m is stretched initially by 5 cm
- A ship of mass 3 x 10⁷ kg initially at rest is pulled by a force of 5 x 10⁴ N through
- MA⁻¹T⁻² is the dimensional formula of
- The charge flowing through a resistance R varies with time t as Q=at-bt²,
- C and Si both have same lattice strcture, having 4 bonding electron in each
Topics: Waves (80)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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