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Question: Answered & Verified by Expert
Out of the following four dimensional quantities. which one qualifies to be called a dimensional constant?
PhysicsUnits and DimensionsCOMEDKCOMEDK 2017
Options:
  • A Acceleration due to gravity
  • B Surface tension of water
  • C Weight of a standard kilogram mass
  • D Velocity of light in vacuum
Solution:
2955 Upvotes Verified Answer
The correct answer is: Velocity of light in vacuum
The velocity of light in vacuum is $3 \times 10^{8} \mathrm{~m} / \mathrm{s}$, which is a dimensional constant.

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