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JEE Main & Advanced AIEEE Solved Paper-2008

  • question_answer
      While measuring the speed of sound by performing a resonance column experiment, a student gets the first resonance condition at a column length of 18 cm during winter. Repeating the same experiment during summer, she measures the column length to be x cm for the second resonance. Then       AIEEE  Solved  Paper-2007

    A) \[54>x>36\]       

    B)        \[36>x>18\]       

    C) \[18>x\]              

    D)        \[x>54\]

    Correct Answer: D

    Solution :

                    \[\frac{V}{4\ell }=\frac{3V'}{4x}\] \[x=3\left( \frac{V'}{V} \right)\ell =\left( 54cm \right)\frac{V'}{V}\] As velocity of sound increases with temperature, V' > V \[\therefore \,\,\,x>54\,cm\]  


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