(A) 280,000 km/s (X)
(B) 300,000 km/s (✔)
(C) 320,000 km/s (X)
(D) none of these (X)
Answer: The speed of light is 300,000 km/s
(A) 280,000 km/s (X)
(B) 300,000 km/s (✔)
(C) 320,000 km/s (X)
(D) none of these (X)
Answer: The speed of light is 300,000 km/s
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