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Mechanical Engineering · Q19

Heat And Mass Transfer

Engineering and GATE · Mechanical Engineering · question 19

Q19

Stefan Boltzmann law is applicable for heat transfer by

A.
Conduction
B.
Convection
C.
Radiation
Answer
D.
Conduction and radiation combined

Answer: Option C

Solution

Answer: Option C
Solution:
Stefan-Boltzmann law is applicable for radiation it states that the total radiant heat power emitted from a surface is proportional to the fourth power of its absolute temperature. The law applies only to blackbodies, theoretical surfaces that absorb all incident heat radiation.
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