Subject: General Science
Book: NCERT Science Class 11
Physical quantities are measured using units and dimensions.
- **Types of Units**:
- Fundamental (meter, kilogram).
- Derived (velocity, force).
- **Dimensional Analysis**:
- Used to check the correctness of equations.
**Possible Exam Questions:**
1. What is dimensional analysis? Explain with an example.
2. Differentiate between fundamental and derived units.
3. How is dimensional consistency used in physics?
4. Why do we need standard units of measurement?
5. How can we derive the formula for force using dimensions?
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