MCQ
  • A
    Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
  • B
    (A) is true but (R) is false
  • C
    Both (A) and (R) are true and (R) is the correct explanation of (A).
  • (A) is false but $( R )$ is true

Answer

Correct option: D.
(A) is false but $( R )$ is true
(D) (A) is false but $( R )$ is true
Sol. In elastic collision for same mass, velocities interchange
Image
$V _{ A }^{\prime}=2 m / s \quad V _{ B }^{\prime \prime}=4 m / s \quad V _{ C }^{\prime}=5 m / s$

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