MCQ practice · SSC Physics Board questions · Chapter 2: Motion
Which of the following are scalar quantities?
Think it through first, then pick an option.
- a Work, power
- b Velocity, momentum
- c Displacement, force
- d Acceleration, buoyancy
Answer and explanation
Correct answer: a Work, power
Both are scalars: work and power are fully expressed by a magnitude, with no direction.
Why the other options are wrong
- b Velocity, momentum: Velocity is a vector, the book's example, and momentum is a vector too. This pair is not scalar.
- c Displacement, force: Displacement and force are both vectors, because each needs a direction along with its magnitude.
- d Acceleration, buoyancy: Acceleration is a vector. Buoyancy is a force, so it is a vector too. This pair is not scalar.
More board questions on this topic
- Which of the following are vector quantities?
- Which pair of quantities are vector quantities?
- Which of the following is a vector quantity?
- Which of the following is a vector quantity?
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