NEET Sample Paper NEET Sample Test Paper-32

  • question_answer 43) The temperature gradient in a rod of \[0.5\text{ }m\]long is\[{{80}^{o}}C/m\]. If the temperature of hotter end of the rod is \[{{30}^{o}}C,\]then the temperature of the cooler end is:-

    A)  \[{{40}^{o}}C\]              

    B)  \[-{{10}^{o}}C\]

    C)  \[{{10}^{o}}C\]              

    D)  \[{{20}^{o}}C\]

    Correct Answer: B

    Solution :

    Temperature gradient \[=\frac{-dT}{dX}\] \[\frac{{{T}_{1}}-{{T}_{2}}}{dX}=80\] \[\frac{30-{{T}_{2}}}{0.5}=80\]      \[\Rightarrow \]  \[{{T}_{2}}=-{{10}^{o}}C\]

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