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Mechanical Engineering · Q75

Heat And Mass Transfer

Engineering and GATE · Mechanical Engineering · question 75

Q75

The ratio of the energy absorbed by the body to total energy falling on it is called

A.
Absorptive power
Answer
B.
Emissive power
C.
Absorptivity
D.
Emissivity

Answer: Option A

Solution

Answer: Option A
Solution:
Absorptive power is a measure of heat absorbed by an object. When heat is incident on the surface an object, a part of it is absorbed and the remaining part is reflected. Usually the absorbed radiation is converted to thermal energy, increasing the object's temperature.