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COMEDK2017PhysicsUnits and Dimensions

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

Options

  1. AAcceleration due to gravity
  2. BSurface tension of water
  3. CWeight of a standard kilogram mass
  4. DVelocity of light in vacuum

Correct answer

D. Velocity of light in vacuum

Step-by-step solution

The velocity of light in vacuum is 3 10⁸ ~m / s , which is a dimensional constant.

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