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NEET Sample Paper NEET Sample Test Paper-38

  • question_answer
    Consider a compound slab consisting of two different materials having equal thickness and thermal conductivities K and 2K respectively. The equivalent thermal conductivity of the slab is

    A) \[\sqrt{2K}\]

    B) \[3K\]

    C) \[\frac{4}{3}K\]

    D) \[\frac{2}{3}K\] 

    Correct Answer: C

    Solution :

     \[K=\frac{2{{K}_{1}}{{K}_{2}}}{{{K}_{1}}+{{K}_{2}}}=\frac{2K.2K}{K+2K}=\frac{4}{3}K\]


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