Everyday Science
NULL
Medium
Question
The speed of light in vacuum is about __________?
A
280,000 km/s
B
300,000 km/s
✓ Official correct answer
C
320,000 km/s
D
none of these
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
280,000 km/s
No member explanations yet for this option.
B
300,000 km/s
No member explanations yet for this option.
C
320,000 km/s
No member explanations yet for this option.
D
none of these
No member explanations yet for this option.
Explanation
It is about 300,000 km/s.
Hence the keyed answer is 300,000 km/s.
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