MCQ
Unit of Stefan's constant is
  • A
    $J\,{s^{ - 1}}$
  • $J\,{m^{ - 2}}{s^{ - 1}}{K^{ - 4}}$
  • C
    $J\,{m^{ - 2}}$
  • D
    $J\,s$

Answer

Correct option: B.
$J\,{m^{ - 2}}{s^{ - 1}}{K^{ - 4}}$
b
(b) $\frac{Q}{t} = \sigma A{T^4}$

$ \Rightarrow \sigma = J{m^{ - 2}}{s^{ - 1}}{K^{ - 4}}$

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