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Optics : Physics MCQ Practice Questions & Answers (English) - ObjectiveMcq

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Optics in Physics : Practice MCQ Questions & Answers with Explanations

1 practice sets · Page 1 of 1

PhysicsEasyOpticsLight

1.

What is the speed of light in a vacuum?

A

3 × 10⁸ m/s

B

3 × 10⁶ m/s

C

3 × 10¹⁰ m/s

D

3 × 10⁴ m/s

Correct Answer:

A — 3 × 10⁸ m/s

Explanation:

The speed of light in vacuum is approximately 3 × 10⁸ m/s.