MCQ practice · SSC Physics Board questions · Chapter 2: Motion
Which of the following is a scalar quantity?
Think it through first, then pick an option.
- a Force
- b Acceleration
- c Energy
- d Electric field intensity
Answer and explanation
Correct answer: c Energy
Energy is a scalar: it has a magnitude and no direction. Like work, power and heat, it is a scalar.
Why the other options are wrong
- a Force: Force is a vector, the book's example: a direction must be given with the magnitude.
- b Acceleration: The book calls acceleration a vector quantity, because a change of velocity involves both magnitude and direction.
- d Electric field intensity: Electric field intensity has a definite direction, so it is a vector quantity.
More board questions on this topic
- Which of the following are scalar quantities?
- Which of the following quantities are vector quantities?
- Which of the following are vector quantities?
- Which pair of quantities are vector quantities?
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