How long does it take light to travel 1 inch (2.54 in vacuum?
A. 8.47×10–11 s.
B. 1.18×10–10 s.
C. 1.31×10–7 s.
D. 7.62×10–6 s.
Answer:C
How long does it take light to travel 1 inch (2.54 in vacuum?
A. 8.47×10–11 s. B. 1.18×10–10 s. C. 1.31×10–7 s. D. 7.62×10–6 s.