Short questions in board exams usually come from these topics:

1. What is physics?

Define physics and explain its scope in everyday life.

2. What is a physical quantity?

Define physical quantity and give examples (length, mass, time, temperature, etc.).

3. What are base quantities and base units?

Name the seven base quantities and their SI base units.

4. What are derived quantities and derived units?

Define derived quantities. Give examples of derived units and show how they are expressed in terms of base units.

5. What are SI units?

Explain the International System of Units (SI). Why is it important to have a standard system of units?

6. What is dimensional analysis?

Define dimensional analysis. Why is it used in physics?

7. What is the principle of homogeneity?

State the principle of homogeneity of dimensions. Explain that dimensions on both sides of a physical equation must be the same.

8. What are the dimensions of velocity?

Write the dimensions of velocity: [L T⁻¹].

9. What are the dimensions of acceleration?

Write the dimensions of acceleration: [L T⁻²].

10. What are the dimensions of force?

Write the dimensions of force: [M L T⁻²].

11. What are the dimensions of work and energy?

Write the dimensions of work and energy: [M L² T⁻²].

12. What is the difference between accuracy and precision?

Explain the difference with examples. Accuracy is near the true value. Precision is consistency of measurements.

13. What is uncertainty in measurement?

Define uncertainty. Why do all measurements have some uncertainty?

14. What is scientific notation?

Define scientific notation. Why is it useful? Give an example.

15. What are significant figures?

Define significant figures. Give the rules for determining significant figures.

16. How many significant figures are in 0.00450?

There are 3 significant figures (4, 5, and the trailing zero).

17. How do you add uncertainties?

When adding or subtracting quantities, add the absolute uncertainties.

18. How do you multiply uncertainties?

When multiplying or dividing quantities, add the percentage or fractional uncertainties.

19. What is the SI unit of force?

The SI unit of force is the newton (N). 1 N = 1 kg m s⁻².

20. What is the SI unit of energy?

The SI unit of energy is the joule (J). 1 J = 1 kg m² s⁻².