Q123 / 180 · COMEDK 2017 · Physics

Out of the following four dimensional quantities. which one qualifies to be called a dimensional constant?

A
Acceleration due to gravity
B
Surface tension of water
C
Weight of a standard kilogram mass
Correct answer
D
Velocity of light in vacuum

Solution

The velocity of light in vacuum is $3 \times 10^{8} \mathrm{~m} / \mathrm{s}$, which is a dimensional constant.

Hence, the correct answer is option: 'D'.

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