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 :
Correct Option: , 2
Solution:
(2) Solar constant $=\frac{\text { Energy }}{\text { Time Area }}$
Dimension of Energy, $E=\mathrm{ML}^{2} \mathrm{~T}^{-2}$
Dimension of Time $=\mathrm{T}$
Dimension of Area $=\mathrm{L}^{2}$
$\therefore$ Dimension of Solar constant
$=\frac{\mathrm{M}^{1} \mathrm{~L}^{2} \mathrm{~T}^{-2}}{\mathrm{TL}^{2}}=\mathrm{M}^{1} \mathrm{~L}^{0} \mathrm{~T}^{-3}$
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