NEET Physics Mathematical Tools, Units & Dimensions Question Bank Units

  • question_answer
    Unit of Stefan's constant is                                              [MP PMT 1989]

    A)       \[J\,{{s}^{-1}}\]   

    B)       \[J\,{{m}^{-2}}{{s}^{-1}}{{K}^{-4}}\]

    C)       \[J\,{{m}^{-2}}\] 

    D)      \[J\,s\]

    Correct Answer: B

    Solution :

                            \[\frac{Q}{t}=\sigma A{{T}^{4}}\Rightarrow \sigma =J{{m}^{-2}}{{s}^{-1}}{{K}^{-4}}\]


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