The dimensions of energy are _____

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Editor">Editor Staff asked 1 year ago

The dimensions of energy are _____
 
(a) [ML^2T^-2]
 
(b) [MLT^-2]
 
(c) [ML^2T^-1]
 
(d) [MLT^-1]
 
This question was posed to me in semester exam.
 
The doubt is from Various Forms of Energy : The Law of Conservation of Energy in division Work, Energy and Power of Physics – Class 11
Select the correct answer from above options 
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Editor">Editor Staff answered 1 year ago

The correct choice is (a) [ML^2T^-2]
 
To elaborate: Energy = Force x Displacement
 
Units of energy = kg x (m/s^2) x m
 
 = kg x m^2 x s^-2
 
Therefore;
 
Dimensions of energy = [ML^2T^-2].

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