Exam-style question
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The Michelson-Morley experiment's null result is best interpreted as evidence for which principle?.
- A.Principle of relativity
- B.Principle of conservation of energy
- C.Principle of least action
- D.Principle of superposition
Model answer
What a good answer should say
- Principle of relativity
Explanation
Why this works
Rule: The null result indicates light speed is invariant in all inertial frames. Substitution: Assume light speed varies with frame.
Working: Expected differences, but none observed. Answer: Supports principle of relativity.
Conclusion: Light speed constant in all inertial frames.
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