A pocket calculator operates at a power of

PHYSICS · Single correct · CBSE · Physics · Units and Measurements · Units and Measurements

Problem

5\times10^{-4}\,\text{W}

. Which of the following expresses this power most conveniently using a metric prefix? (a)

5\,\text{mW}

(b)

0.5\,\text{mW}

(c)

500\,\mu\text{W}

(d)

0.5\,\mu\text{W}