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NEET Sample Paper NEET Sample Test Paper-66

  • question_answer
    The figure given below shows the cooling curve of pure wax material after heating. It cools from A to B and solidifies along BD. If L and C are respective values of latent heat and the specific heat of the liquid wax, the ratio L/C is

    A) 40                                

    B) 80

    C) 100                              

    D) 20

    Correct Answer: D

    Solution :

    Let the quantity of heat supplied per minute be Q Then quantity of heat supplied in \[2\,\min \,\,=\,\,mC(90-80)\] In 4 min, heat supplied \[=\,\,2\,\,mC(90-80)\] \[\therefore \,\,\,2\,mC(90-80)\,=\,mL\,\,\,\Rightarrow \,\,\,\frac{L}{C}\,\,=\,\,20\]


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