What is the speed of light in a vacuum?

Question

a) v=3⋅108 m/s
v equals 3 times 10 superscript 8 baseline m per s

b) v=2⋅108 m/s
v equals 2 times 10 superscript 8 baseline m per s

c) c=2⋅108 m/s
c equals 2 times 10 superscript 8 baseline m per s

d) c=3⋅108 m/s

Answer 1

The correct answer is d) c=3⋅108m/s. The speed of light in a vacuum is approximately 299,792,458 meters per second or approximately 3 times 10 to the power of 8 meters per second. This is denoted by the symbol "c" in physics equations.