Which of the following lengths measured is most accurate and why ? (a) 500.0cm (b) 0.0005 cm (c ) 6.00 cm

Explanation

To determine which of the given lengths is the most accurate, we need to analyze the precision of each measurement based on the number of significant figures they contain.

### Step-by-Step Solution:

1. **Identify the Measurements**:
- (a) 500.0 cm
- (b) 0.0005 cm
- (c) 6.00 cm
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