NEET Sample Paper NEET Sample Test Paper-19

  • question_answer 29) A cylindrical tube partially filled with water is in resonance with a tuning fork when height of air column is 0.1 m. When the level of water is lowered, the resonance is again observed at 0.35 m. The end correction is:

    A)  0.025 m                     

    B)  0.015 m

    C)  0.001 m                      

    D)  0.002 m

    Correct Answer: A

    Solution :

    For first resonance \[{{\ell }_{1}}+e=\lambda /4\] Where e is the end correction For second resonance\[{{\ell }_{2}}+e=\frac{3\lambda }{4}\] So, \[e=\frac{{{\ell }_{2}}-3{{\ell }_{1}}}{2}=0.025\,m.\] Hence, the correction option is [a].

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