Question

Dimensional formula of intensity of radiation

Answer 1

P/A
=ML^2T^-3/L^2
=MT^-3

Answer 2

Answer: The correct answer is $I=MT^{-3}{L^{0}}$.

Explanation:

The expression for the intensity of radiation is defined as;

$I=\frac{P}{A}$

Here, P is the power, I is the intensity and A is the area.

The dimensional formula for P is $ML^{2}T^{-3}$.

The dimensional formula for A is $L^{2}$.

Find out the dimensional formula for the intensity of radiation.

$I=\frac{P}{A}$

Put $P=ML^{2}T^{-3}$ and $A=L^{2}$.

$I=\frac{ML^{2}T^{-3}}{L^{2}}$

$I=MT^{-3}}{L^{0}$

Therefore, the dimensional formula of intensity of radiation is $I=MT^{-3}{L^{0}$.