Navigate

A vibrating string of certain length l under a tension T resonates with a mode

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.

IIT2008
admin:

Related Questions

  1. A soap bubble oscillates with time period T, which in turn depends on the pressure
  2. The acceleration of an electron in an electric field of magnitude 50 V/cm,
  3. Time period of the rotation of the earth about its own axis is 24 hour
  4. A wire of length L metre carrying a current I ampere is bent in the form
  5. A simple pendulum has a time period T₁ when on the earth’s surface and T₂ When taken