JEE Main Physics question

Out of the following four dimensional quantities, which one qualifies to be called a dimensional constant? [Guj CET 2006]

(A)Acceleration due to gravity
(B)Surface tension of water
(C)Weight of a standard kilogram mass
(D)Velocity of light in vacuumCorrect

Answer: (D)

Solution

A dimensional constant must have fixed, universal value as well as dimensions. Acceleration due to gravity varies with location, surface tension of water varies with temperature, and the weight of a

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Question ID VK-156945