Question
Download Solution PDFThe unit of Stefean's constant is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
- Stefan's Law: According to it the radiant energy emitted by a perfectly black body per unit area per sec (i.e. emissive power of black body) is directly proportional to the fourth power of its absolute temperature i.e.
\(E \propto {T^4}\)
\( \Rightarrow E = \sigma {T^4}\)
Where, is a constant called Stefan’s constant.
- The value of Stefan's constant is 5.67 × 10-8 W/m2K4.
EXPLANATION:
- From the above, it is clear that the unit of Stefan's constant is Wm-2k-4. Therefore option 3 is correct.
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