The length of a rod is measured as `35.3cm` then the gradutions ont eh scale are up to

Options

A. `1cm`
B. `1mm`
C. `0.01mm`
D. `0.1mm`

Explanation

To solve the question regarding the measurement of the length of a rod and the graduation on the scale, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Measured Length**: The length of the rod is given as 35.3 cm.

2. **Determine the Significant Figures**: In the measurement 35.3 cm, there are three significant figures. The digits '3', '5', and '3' are all significant.

3. **Identify the Uncertain Digit**: The last digit in the measurement (which is '3' in this case) is considered the uncertain digit. This means that the measurement is accurate to the nearest 0.1 cm.

4. **Determine the Least Count**: The least count of the measuring instrument is equal to the uncertainty in the measurement. Since the uncertain digit is in the tenths place (0.3), the least count is 0.1 cm.

5. **Convert to Millimeters**: Since the question may require the answer in millimeters, we can convert the least count from centimeters to millimeters.
- 1 cm = 10 mm, therefore:
- 0.1 cm = 0.1 * 10 mm = 1 mm.

6. **Conclusion**: The graduation on the scale must be able to measure up to the least count, which is 0.1 cm or equivalently 1 mm.

### Final Answer:
The graduation on the scale is up to **1 mm**.

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