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NEET Sample Paper NEET Sample Test Paper-44

  • question_answer
    A stretched wire of length 110cm is divided into three segments whose frequencies are in the ratio 1:2: 3. Their length must be:

    A) 20cm, 30cm, 60cm

    B)   60cm, 30cm, 20cm

    C) 60cm, 20cm, 30cm        

    D) 30cm, 60cm, 20cm

    Correct Answer: B

    Solution :

    \[\operatorname{Efficiency} \eta  =\frac{{{E}_{o}}}{{{E}_{1}}}\] \[\frac{28}{100}=\frac{mgh}{21\times 1000}\] \[2\times 21\times 10=40\times 10\times h\] \[\operatorname{h}=14.7=15m\]


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