Question

The absorptive power $\left(a\right)$ can be -

[Except for the black body]

• A. $\ge 1$
• B. $>1$
• C. $<1$
• D. None of these

Answer 1

The correct option is C $<1$

Absorptive power is defined as,

$a=\frac{\text{Energy absorbed}}{\text{Energy incident}}$

As,

$\text{Energy absorbed}<\text{Energy incident}$

$\Rightarrow a<1$

Hence, option $\left(C\right)$ is the correct answer.