# 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:

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:

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

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

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

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

JEE Main Previous Year Single Correct Question of JEE Main from Chemistry Laws of Motion chapter.

JEE Main Previous Year 2020

Correct Option: 2

Solution:

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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