Question

the order of magnitude of speed of light in S.i. units is

Answer 1

Order of magnitude of a × 10^b if a ≤ 5 is b.

Speed of light = 3 × 10^8 m/s
Hence, order of magnitude is 8

Answer 2

Answer: The order of magnitude of speed of light in S.i. units is 8.

Explanation:

If considering the SI unit

Then,

SI unit of distance is meter

SI unit of time is second

Let c be the speed of light in air

Therefore c=3×10^8 meter / second.

As per the question, the order of magnitude in SI unit is the power of 10.

Here 8 is the power of 10.

Therefore, the order of magnitude of speed of light in S.i. units is 8.