JEE Main & Advanced Physics Transmission of Heat Question Bank Conduction

  • question_answer
    The temperature gradient in a rod of 0.5 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)            \[{{0}^{o}}C\]

    Correct Answer: B

    Solution :

               \[\frac{{{\theta }_{1}}-{{\theta }_{2}}}{l}=80\Rightarrow \frac{30-{{\theta }_{2}}}{0.5}=80\Rightarrow {{\theta }_{2}}=-{{10}^{o}}C\]


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