Question

If the amount of heat incident upon a body is $X$ calorie and it absorbs $Y$ calorie out of it , then the coefficient of absorption will be

• A. $X+Y$
• B. $XY$
• C. $Y/X$
• D. $X/Y$

Answer 1

The correct option is C $Y/X$

Coefficient of absorption is defined as the ration of amount of radiation a body absorbs to the amount of radiation that is incident on the body.
Incident radiation = $X$
Absorbed radiation = $Y$
Hence absorptive power = $\frac{Y}{X}$