Unit of emissive power – Rankers Physics

Heat Transfer - Radiation: Practice Problem & Solution

The unit of emissive power is
\(\text{J m}^{-2}\)
\(\text{W s}^{-1}\)
\(\text{J m}^{-2}\text{ s}^{-1}\)
\(\text{W m}^2\text{ s}^{-1}\)

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Heat Transfer - Radiation. Understanding the underlying formula is key to arriving at the correct answer below:

Emissive power is defined as the thermal energy emitted per unit area per unit time, so its unit is \(\text{J m}^{-2}\text{ s}^{-1}\) (or \(\text{W m}^{-2}\)).

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