NEET 2015 Physics question

Physics Units and Measurement NEET 2015

If energy (), velocity () and time () are chosen as the fundamental quantities, the dimensional formula of surface tension will be :

(1)
(2)Correct
(3)
(4)

Answer: (2)

Solution

Surface tension , with dimensions . Write : [ML^0T^{-2}] = [ML^2T^{-2}]^a[LT^{-1}]^b[T]^c = [M^aL^{2a+b}T^{-2a-b+c}]. Comparing powers: ; $2a +

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Question ID VK-091825