JEE PYQ: Units And Dimensions Question 8
Question 8 - 2020 (03 Sep Shift 2)
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) $ML^2T^{-2}$
(2) $ML^0T^{-3}$
(3) $M^2L^0T^{-1}$
(4) $MLT^{-2}$
Show Answer
Answer: (2)
Solution
Solar constant $= \frac{\text{Energy}}{\text{Time} \times \text{Area}} = \frac{M^1L^2T^{-2}}{TL^2} = M^1L^0T^{-3}$.