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Concepts Of Physics MCQ Edition [Volume 1]PhysicsSpeed of Light

Which of the following methods can be utilized to measure the speed of light inside a laboratory?

Options

  1. AFizeau method
  2. BFoucault method
  3. CMichelson method
  4. DRoemer method

Correct answer

B. Foucault method

Step-by-step solution

Foucault's method uses a rotating mirror and a fixed concave mirror separated by a relatively small distance of a few meters. This compact setup allows the experiment to be performed inside a laboratory. Fizeau's method requires a large distance of several kilometers between the source and the mirror. Michelson's method uses a rotating octagonal mirror and requires a very large distance of tens of kilometers. Roemer's method is an astronomical method based on the observation of the eclipses of Jupiter's moons.

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