Question

A 30 m chain is divided into

• A. 90 links
• B. 100 links
• C. 150 links
• D. 200 links

Hint:

Remember the standard construction of metric chains:
- 5 links per meter.
- A 20 m chain has $20 \times 5 = \textbf{100}$ links.
- A 30 m chain has $30 \times 5 = \textbf{150}$ links.

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
The question asks for the number of links in a standard 30-meter metric survey chain.

Step 2: Detailed Explanation:
Surveyor's chains are traditional measuring instruments, and their construction follows specific standards.

• Metric Chains: These come in standard lengths, typically 20 m and 30 m. They are designed so that each meter of length corresponds to a specific number of links.

• In a standard metric chain, there are

5 links per meter.

For a 30-meter chain, the total number of links is:
\[ \text{Number of Links} = (\text{Length in meters}) \times (\text{Links per meter}) \] \[ \text{Number of Links} = 30 \text{ m} \times 5 \text{ links/m} \] \[ \text{Number of Links} = 150 \text{ links} \] Similarly, a 20-meter chain would have $20 \times 5 = 100$ links.

Step 3: Final Answer:
A 30 m chain is divided into 150 links.