9th Physics new sylabus Chap 1 short questions

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Physics Chapter 1 – Short Questions

1. Define science.

2. Define physical quantities with example.

3. Define non-physical quantities with example.

4. Does a physical quantity have units?

5. Write types of the physical quantity.

6. Define measurements. What are the parts of the measurements?

7. Define unit of a measurement with suitable example.

8. What is the role of SI unit in Science and Technology?

9. What is meant by System International unit?

10. Define base units and write its examples.

11. What are prefixes? Give example.

12. Write names of the prefixes which are commonly used.

13. Define scientific notation with example. Why do we use scientific notation?

14. Write down the rules while using prefixes and SI units.

15. Define metre rule. What is its least count?

16. What is measuring tape? What is its least count?

17. Define Vernier caliper. What is its least count? Also tell about its zero error.

18. What is screw gauge? What is its least count? Also discuss its errors.

19. What is parallax error? How can it be removed?