The measurement $0.0002 \mathrm{~g}$ has significant figures. ANSWERING INSTRUCTIONS: In your instead use a number. For example instead of typing "forty", instead use the number 40.

Step 1 ：The significant figures in a number are digits that carry meaningful information about its precision. In the given measurement, $0.0002 \mathrm{~g}$, the significant figures are the non-zero digits and any zeros between them. In this case, the number 2 is the only significant figure.

Step 2 ：Final Answer: The measurement $0.0002 \mathrm{~g}$ has \(\boxed{1}\) significant figure.