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JEE Main 2020 (3 Sep, Shift 2) · Units & Dimensions

Units & Dimensions question from JEE Main 2020 (3 Sep, Shift 2)

Q72JEE Main 2020 · 3 SEP · SHIFT 2Easy

Units & Dimensions

Amount of solar energy received on the earth’s surface per unit area per unit time is defined as solar constant. Dimension of solar constant is:

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Answer: (b)

Solar constant $=$ energy / (area $\times$ time) $=$ power / area.
$[S] = \mathrm{ML^2T^{-3}}/\mathrm{L^2} = \mathrm{ML^0T^{-3}}$
So the answer is (b).

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