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Model Paper 10 — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysicsModel Paper 101 Mark
MCQ
Assertion (A): A quick collision between two bodies is more violent than slow collision, even when initial and final velocities are identical.
Reason (R): The rate of change of momentum determines that the force is small or large.
  • A
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
✓

Answer

(a) Both A and R are true and R is the correct explanation of A .
Explanation: In a quick collision, time t is small. As $F \times t =$ constant. Therefore, force involved is large, i.e., collision is more violent in comparison to slow collision.

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