JEE Main & Advanced Physics Wave Mechanics Question Bank Self Evaluation Test - Waves

  • question_answer
      In the sonometer experiment, a tuning fork of frequency 256 Hz is in resonance with 0.4 m length of the wire when the iron load attached to free end of wire is 2 kg. If the load is immersed in water, the length of the wire in resonance would be (specific gravity of iron = 8) 4

    A)  0.37 m

    B)  0.43 m

    C) 0.31 m

    D) 0.2 m

    Correct Answer: A

    Solution :

    [a] \[\sqrt{T/l}=constant\]; Tension decreases by a factor (8 -1) / 8, length decreases by square root of this i.e. 0.77.


You need to login to perform this action.
You will be redirected in 3 sec spinner