Question

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

• A. 9
• B. 4
• C. 3
• D. 10

Hint:

Leading zeros are never significant. Zeros between non-zero digits are always significant.

Answer 1

The Correct Option is B

Step 1: Identify significant digits.
In 0.00005041, leading zeros before the first non-zero digit are placeholders and not significant. The significant portion starts at 5.

Step 2: Count the significant figures.
The digits 5, 0, 4, 1 are all significant (the zero between 5 and 4 lies between two non-zero digits, so it counts). Total = 4. \[ \boxed{4} \]