Speed of Light in Vaccum?
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3*10^10 m/s
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3*10^10 cm/s
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3*10^8 km/s
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3*10^8 cm/s
B
Correct answer
Explanation
The speed of light in vacuum is approximately 3×10^8 m/s, which equals 3×10^10 cm/s. Option B correctly converts this value to centimeters per second, while the other options use incorrect units or magnitudes.