The speed of light in vacuum is approximately? EASY 1 Point -0.25 Negative MCQ #1268 Physics Sciences Federal NTS Question The speed of light in vacuum is approximately? Options A 3 × 10⁶ m/s B 3 × 10⁸ m/s C 3 × 10¹⁰ m/s D 3 × 10⁴ m/s Reveal Answer Reset 📝 Explanation The speed of light in vacuum (c) is approximately 3 × 10⁸ metres per second (299,792,458 m/s precisely). It is a universal physical constant. ← Previous MCQ📋 All MCQs📚 LearnNext MCQ → Related MCQs EASY The longest bone in the human body is MEDIUM The smallest bone in the human body is EASY The heart is located in