It is estimated that each $\mathrm{cm}^2$ of earth receives about 2 calorie of heat energy per minute from…

It is estimated that each $\mathrm{cm}^2$ of earth receives about 2 calorie of heat energy per minute from the sun. This is called solar constant, the value of solar constant in S.I. units is
  1. $2 \mathrm{~J} \mathrm{~m}^2 \mathrm{~s}^{-1}$
  2. $1.4 \mathrm{Wm}^{-2}$
  3. $2.4 \mathrm{kWm}^{-2}$
  4. $1.4 \mathrm{kJm}^{-2} \mathrm{~s}^{-1}$

Solution

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Asked in: AP EAMCET 2017 (25 Apr Shift 1)

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