Question

The number of significant figures in quantity \( 0.00005041 \; \text{J} \) is:

• A. 9
• B. 4
• C. 3
• D. 10

Hint:

Significant Figures}
Leading zeros (before the first non-zero digit) are never significant.
Trailing zeros after a decimal point and after a non-zero digit are always significant.
Any non-zero digit is always significant.
Zeros between non-zero digits are also significant.

Answer 1

The Correct Option is B

Step 1: Understand what counts as significant figures. Significant figures are the digits that carry meaning contributing to a number's accuracy. Step 2: Identify and discard leading zeros. In \( 0.00005041 \), all the leading zeros (those before the first non-zero digit) are not counted. Step 3: Count the remaining digits. After skipping the zeros, we are left with: \[ 5, 0, 4, 1 \] So, the number of significant figures = 4. Conclusion: \( \boxed{4} \) is the correct number of significant figures.