Q.

The diameter of a wire is measured to be 0.0250 X 10-4 m. The number of significant figures in the measurement is

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a

five

b

four

c

three

d

nine

answer is C.

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Detailed Solution

preceding zeros are not significant and powers of 10 are not counted as significant
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The diameter of a wire is measured to be 0.0250 X 10-4 m. The number of significant figures in the measurement is