Physics 9th Chap 1 Topic 3(Base and derived)

Physics Chapter 1 (Topic3 : Base and Derived Quantities)

Differentiate between base and derived physical quantities and
units.
Question(s) will be asked in final examination.

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Q1. What is a base physical quantity?

A) A quantity formed from other quantities

B) A quantity that cannot be measured

C) A fundamental quantity not derived from other quantities

D) A quantity without a unit

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Q2. Which of the following is a base physical quantity?

A) Force

B) Energy

C) Mass

D) Pressure

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Q3. What is a derived physical quantity?

A) A quantity independent of others

B) A quantity formed by combining base quantities

C) A quantity without unit

D) A quantity that cannot be measured

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Q4. Which of the following is a derived quantity?

A) Length

B) Time

C) Mass

D) Velocity

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Q5. Which pair contains only base quantities?

A) Force, Energy

B) Mass, Time

C) Pressure, Volume

D) Speed, Acceleration

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Q6. Which of the following is NOT a base quantity?

A) Length

B) Temperature

C) Force

D) Electric current

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Q7. Which of the following correctly represents a derived unit?

A) meter (m)

B) kilogram (kg)

C) second (s)

D) Newton (N)

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Q8. What is the SI unit of a base quantity always called?

A) Compound unit

B) Derived unit

C) Fundamental unit

D) Variable unit

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Q9. Which of the following is NOT a derived quantity?

A) Force

B) Work

C) Mass

D) Pressure

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Q10. Which combination correctly forms speed?

A) Mass / Time

B) Distance / Time

C) Force / Time

D) Energy / Volume

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Q11. Which statement about base quantities is correct?

A) They depend on other quantities

B) They are derived from formulas

C) They are fundamental and independent

D) They have no units

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Q12. Which of the following is a derived unit?

A) kilogram

B) second

C) Newton

D) Kelvin

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Q13. What is the unit of a derived quantity formed from base units?

A) Always dimensionless

B) Combination of base units

C) Always a new fundamental unit

D) Always without unit

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Q14. Which is NOT a correct base quantity and unit pair?

A) Length – meter

B) Mass – kilogram

C) Time – second

D) Force – newton

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Q15. Which of the following is an example of a derived quantity?

A) Temperature

B) Length

C) Area

D) Mass

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Q16. What is the relationship between base and derived quantities?

A) They are unrelated

B) Derived quantities are combinations of base quantities

C) Base quantities are made from derived quantities

D) Both are identical

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Q17. Which of the following is a base unit?

A) Newton

B) Joule

C) meter

D) Pascal

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Q18. Which of the following is a derived unit of pressure?

A) kg/m

B) N/m²

C) m/s

D) kg • m

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Q19. Why is force considered a derived quantity?

A) It is fundamental

B) It depends only on time

C) It is calculated from mass, length, and time

D) It has no unit

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Q20. Which of the following is NOT formed from base quantities?

A) Velocity

B) Energy

C) Time

D) Acceleration

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Q21. Which of the following correctly distinguishes base from derived
quantities?

A) Base quantities are always larger

B) Derived quantities come from formulas of base quantities

C) Base quantities are always calculated

D) Derived quantities are independent

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Q22. Which is an example of a derived quantity involving two base
quantities?

A) Mass

B) Length

C) Speed

D) Time

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Q23. Which of the following is NOT a characteristic of base quantities?

A) Independent

B) Fundamental

C) Derived from others

D) Have SI units

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Q24. Which physical quantity is derived from force and distance?

A) Power

B) Work

C) Pressure

D) Velocity

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Q25. Which statement is correct about SI system?

A) It has only derived quantities

B) It has only base quantities

C) It is based on base quantities and derived from them

D) It has no units

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Q26. Which of the following is a correct derived unit?

A) kgm/s²

B) meter

C) second

D) kilogram

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Q27. Why is area considered a derived quantity?

A) It is measured directly

B) It is independent

C) It is product of two lengths

D) It has no unit

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Q28. Which of the following is a correct base quantity set?

A) Force, Energy, Power

B) Mass, Length, Time

C) Speed, Velocity, Acceleration

D) Pressure, Area, Volume

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Q29. What is the key difference between base and derived quantities?

A) Base quantities are calculated

B) Derived quantities are fundamental

C) Base quantities are independent, derived are dependent

D) Both are identical

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Q30. Which of the following correctly describes derived quantities?

A) Independent of measurement

B) Formed from base quantities using mathematical relations

C) Without units

D) Not used in physics

Your score is

The average score is 30%

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