Question

Which method is used to measure length?

• A. Dimensional method
• B. Pendulum method
• C. Angular method
• D. RADAR method

Hint:

Dimensional methods are commonly used in physics and engineering to measure quantities such as length, width, thickness, and height.

Answer 1

The Correct Option is A

Concept: Length is a fundamental physical quantity that can be measured directly using dimensional methods and measuring instruments such as rulers, scales, vernier calipers, and micrometers. The dimensional method is associated with measuring physical dimensions like length, breadth, and height.

Step 1: Understand the purpose of dimensional measurement.
Dimensional methods are used to determine the size or dimensions of an object.

Step 2: Identify the correct method for measuring length.
Among the given options, the appropriate method used to measure length is: \[ \text{Dimensional method} \] Hence, the correct answer is: \[ \boxed{(A)\ \text{Dimensional method}} \]