Question 744: Thermodynamics & KTG

Question

Given that ' $x$ ' joule of heat is incident on a body. Out of that, total heat reflected and transmitted is ' $y$ ' joule. The absorption coefficient of body is

Accepted Answer

The absorption coefficient of a body, denoted by $a$, is a measure of the amount of incident heat that is absorbed by the body. The absorption coefficient can be calculated using the formula:
$$ a = \frac{	ext{absorbed heat}}{	ext{incident heat}} $$
Given that the incident heat is $x$ joules and the heat reflected and transmitted is $y$ joules, the heat absorbed by the body can be expressed as:
$$ 	ext{absorbed heat} = x - y $$
This is because the total heat accounted for includes reflected, transmitted, and absorbed heat, and it must equal the incident heat. Therefore, the absorption coefficient is:
$$ a = \frac{x - y}{x} $$
Thus, the correct option is:
Option C
$$ \frac{x-y}{x} $$

Answer

$\frac{x}{y}$

Answer

$\frac{y}{x}$

Answer

$\frac{x-y}{x}$

Answer

$\frac{y-x}{x}$

Thermodynamics & KTG

Given that ' x ' joule of heat is incident on a body. Out of that, total heat reflected and transmitted is ' y ' joule. The absorption coefficient of body is

Choose the correct answer: