The emissive power of a sphere of area 0.02 m2 is 0.5 kcal s-1 m-2. What is the amount of heat radiated

by nehapatil (3.2k points) in Chapter3:Kinetic Theory of Gases and Radiation asked May 30, 2022 673 views

edited Jun 29, 2023

The emissive power of a sphere of area 0.02 m² is 0.5 kcal s^-1 m^-2. What is the amount of heat radiated by the spherical surface in 20 second?

1 Answer

by nehapatil (3.2k points) answered May 30, 2022

by Doubtly selected Jun 29, 2023

Given : R = 0.5 kcal-s^-1 'm^-2 , A =0.02 m², t=20s

Q = RAt = (0.5) (0.02) (20) = 0.2 kcal

0.2 kcal is the required quantity.

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