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MCQ practice · SSC Physics Board questions · Chapter 3: Force

Dinajpur Board 2024

In the case of forces:

  1. i. The gravitational force is much weaker than the electromagnetic force
  2. ii. The gravitational force is weaker than the weak nuclear force
  3. iii. The electromagnetic force is stronger than the strong nuclear force

Think it through first, then pick an option.

  1. a i and ii
  2. b ii and iii
  3. c i and iii
  4. d i, ii and iii
Answer and explanation

Correct answer: a i and ii

i is true: gravity is far weaker than electromagnetic. ii is true: gravity is weaker even than the weak force. iii is false, so it is left out.

Why the other options are wrong

  • b ii and iii: iii is false: the strong nuclear force is stronger than the electromagnetic force, so ii and iii cannot both hold.
  • c i and iii: i is true but iii is false, and this option also drops the true statement ii.
  • d i, ii and iii: iii is false: the strong force is a hundred times stronger than the electromagnetic one, so all three cannot be true.