Significant Figures

Non-zero digits are always significant ( $5, 6$ ).
Leading zeros are not significant ( $0.00$ just indicates decimal position).
Trailing zeros after a decimal point are significant as they indicate precision ( $0$ after $6$ is significant). Thus, $5, 6$ , and the last $0$ are the 3 significant figures.

This easy difficulty physics question is from the chapter experimental skills and error analysis, covering the topic of significant figures. It appeared in the 2025 exam.

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Significant Figures

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