## Q. 1.CA.4

## Chapter 1.CA

## Q. 1.CA.4

**Significant figures**

To seven significant figures, the speed of light is c = 2.997925 × 10^8 m/s. The three choices listed are possible ways of writing the speed of light with two, three, and four significant figures. In which of the choices is the speed of light written correctly?

A. c = 3.0 \times 10^8 m/s

B. c = 3.00 \times 10^8 m/s

C. c = 3.000 \times 10^8 m/s

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