Coefficient of Restitution & Rebound — JEE Main Physics MCQs with Solutions
Free JEE Main Physics Coefficient of Restitution & Rebound MCQs with step-by-step solutions (2 questions). Part of Centre of Mass, Momentum & Collisions. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Coefficient of Restitution & Rebound · easy · numerical
A ball dropped from 1.8 m rebounds with e = 2/3. The rebound height is:
A. 1.2 m
B. 0.8 m ✓ Correct
C. 0.6 m
D. 0.9 m
Solution: h₁ = e²h = (4/9)×1.8 = 0.8 m.
Q2 — Coefficient of Restitution & Rebound · medium · numerical
A ball dropped from height h keeps bouncing with e = 1/√2. The TOTAL distance travelled before it stops is:
A. 2h
B. 3h ✓ Correct
C. 4h
D. h
Solution: D = h(1 + e²)/(1 − e²) = h(1.5/0.5) = 3h — the classic geometric series.