Physics 9th Chap 1 Topic 7(Scalar And Vector)

Physics Chapter 1 (Topic7 : scalar and vector)

Differentiate between scalar and vector quantities.

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Q1. Which statement best defines a scalar quantity?

A) A quantity having magnitude and direction

B) A quantity having only direction

C) A quantity having magnitude only

D) A quantity without any unit

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Q2. Which of the following is a vector quantity?

A) Mass

B) Temperature

C) Distance

D) Displacement

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Q3. Which pair contains only scalar quantities?

A) Force, velocity

B) Mass, energy

C) Displacement, speed

D) Acceleration, distance

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Q4. Which physical quantity requires direction for complete description?

A) Speed

B) Distance

C) Temperature

D) Velocity

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Q5. Which of the following is NOT a vector quantity?

A) Force

B) Weight

C) Speed

D) Acceleration

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Q6. Which statement is correct about scalar quantities?

A) They require direction

B) They cannot be measured

C) They have magnitude only

D) They are always negative

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Q7. Which of the following is an example of a vector quantity in daily life?

A) 50 kg mass

B) 20°C temperature

C) 10 m displacement east

D) 5 liters volume

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Q8. Which of the following is a scalar quantity?

A) Velocity

B) Force

C) Distance

D) Acceleration

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Q9. What is essential for representing a vector graphically?

A) Circle diagram

B) Bar chart

C) Arrow

D) Table

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Q10. In vector representation, the arrow length represents:

A) Direction

B) Unit

C) Magnitude

D) Mass

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Q11. The arrowhead of a vector shows:

A) Magnitude

B) Direction

C) Speed

D) Unit

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Q12. Which of the following is NOT required to define a scalar quantity?

A) Magnitude

B) Unit

C) Direction

D) Measurement

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Q13. Which pair is correctly classified?

A) Speed – vector, velocity – scalar

B) Force – scalar, mass – vector

C) Distance – scalar, displacement – vector

D) Energy – vector, time – vector

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Q14. Which of the following has both magnitude and direction?

A) Temperature

B) Work

C) Displacement

D) Energy

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Q15. Why is speed considered a scalar quantity?

A) It has direction

B) It depends on force

C) It has magnitude only

D) It is always constant

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Q16. Which of the following is a vector quantity?

A) Work

B) Energy

C) Force

D) Power

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Q17. Which statement is correct?

A) Scalars have direction only

B) Vectors have magnitude only

C) Scalars have magnitude only

D) Scalars have both magnitude and direction

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Q18. Which of the following is NOT a vector quantity?

A) Acceleration

B) Displacement

C) Velocity

D) Mass

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Q19. In vector diagrams, equal vectors have:

A) Same direction only

B) Same magnitude only

C) Same magnitude and direction

D) Same unit only

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Q20. Which is the correct comparison?

A) Scalars need direction, vectors do not

B) Vectors need magnitude only

C) Scalars need magnitude only

D) Vectors have no units

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Q21. Which quantity changes when direction changes but magnitude remains the same?

A) Scalar quantity

B) Vector quantity

C) Temperature

D) Mass

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Q22. Which of the following is a scalar pair?

A) Force, velocity

B) Distance, speed

C) Displacement, acceleration

D) Weight, force

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Q23. What happens to a vector if only its direction changes?

A) It becomes scalar

B) It becomes zero

C) It becomes a different vector

D) It remains unchanged

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Q24. Which physical quantity is independent of direction?

A) Velocity

B) Displacement

C) Speed

D) Force

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Q25. Which tool is used to add vectors graphically?

A) Table method

B) Arrow head-to-tail method

C) Graph plotting only

D) Formula substitution only

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Q26. Which statement is false?

A) Scalars have magnitude

B) Vectors have direction

C) Scalars have direction

D) Vectors are represented by arrows

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Q27. Which of the following is a vector quantity in motion?

A) Distance traveled

B) Time taken

C) Displacement

D) Speed

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Q28. Why is velocity different from speed?

A) Velocity has no magnitude

B) Speed has direction

C) Velocity has direction

D) Speed is a vector

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Q29. Which is the correct graphical representation of a vector?

A) Dot

B) Circle

C) Arrow

D) Bar

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Q30. Which quantity cannot be shown using an arrow?

A) Force

B) Velocity

C) Distance

D) Acceleration

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Q31. A vector of greater magnitude is represented by:

A) Smaller arrow

B) Thicker arrow only

C) Longer arrow

D) Curved arrow

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Q32. Which of the following best describes scalar quantities in physics?

A) Require angle only

B) Require direction only

C) Require magnitude only

D) Require both magnitude and direction

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Q33. Which of the following is NOT used in vector representation?

A) Arrow length

B) Arrow direction

C) Arrowhead

D) Color of object

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Q34. Which is a correct real-life vector example?

A) 5 kg mass

B) 10°C temperature

C) 20 m/s north

D) 100 J energy

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Q35. Which statement correctly compares scalar and vector quantities?

A) Scalars need direction, vectors do not

B) Scalars have magnitude only, vectors have magnitude and direction

C) Both are identical

D) Vectors have no units

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