Approximately how long does it take light to travel from the fingertips of a person's extended arm to one's eye?
A) zero time because light is transmitted instantaneously
B) 2.5 trillionths of a second (2.5 × 10-12 sec)
C) 2.5 billionths of a second (2.5 nanoseconds)
D) 2.5 millionths of a second (2.5 microseconds)
Correct Answer:
Verified
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