MCQ practice · SSC Physics Board questions · Chapter 2: Motion
What is the distance covered by the object, in metres?
Think it through first, then pick an option.
- a 25.13
- b 8
- c 4
- d 0
Answer and explanation
Correct answer: a 25.13
Path length = circumference = 2πr = 2 × 3.14 × 4 ≈ 25.13 m. Going round from A back to A, the whole path is the distance covered.
Why the other options are wrong
- b 8: 8 m is the diameter. Distance is measured along the path, not along the diameter.
- c 4: 4 m is the radius. The path is much longer than that.
- d 0: Zero is the displacement, because the start and end points coincide. The distance covered is not zero.
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