**Question: **Amount of solar energy received on the earth's surface per unit area per unit time is defined a solar constant. Dimension of solar constant is:

$\mathrm{ML}^{2} \mathrm{~T}^{-2}$

$\mathrm{MLT}^{-2}$

$\mathrm{M}^{2} \mathrm{~L}^{0} \mathrm{~T}^{-1}$

$\mathrm{ML}^{0} \mathrm{~T}^{-3}$

Correct Option: , 4

**Solution:**
$S=\frac{P}{A}=\frac{M L^{2} T^{-3}}{L^{2}}=M T^{-3}$