Question

The Solar constant is defined as the energy incident per unit area per second. The dimensional formula for solar constant is

• A. $\left[M^0{L}^0{T}^0\right]$
• B. $\left[ML{T}^{-2}\right]$
• C. $M{L}^2{T}^{-2}]$
• D. $\left[M{L}^0{T}^{-3}\right]$

Answer 1

Answer: (D)

$\left[M{L}^0{T}^{-3}\right]$

Energy incident per unit area, per second in dimensions
$=\frac{Energy}{Area\times second}=\frac{M{L}^2{T}^{-2}}{L^{2}T}=M{L}^o{T}^{-3}$