Two identical spheres move in opposite directions with speeds `v_(1)` and `v_(2)` and pass behind an opaque screen, where they may either cross without touching (Even 1) or make an elastic hand-on collision (Event 2).A. We can never make out which event has occurredB. We cannot make out which event has occurred only if `v_(1) = v_(2)`C. We can always make out which event has occurredD. We can make out which event has occurred only if `v_(1) = v_(2)`

Two identical spheres move in opposite directions with speeds `v_(1)`

1.	Two identical spheres move in opposite directions with speeds `v_(1)` and `v_(2)` and pass behind an opaque screen, where they may either cross without touching (Even 1) or make an elastic hand-on collision (Event 2).A. We can never make out which event has occurredB. We cannot make out which event has occurred only if `v_(1) = v_(2)`C. We can always make out which event has occurredD. We can make out which event has occurred only if `v_(1) = v_(2)`
Answer» Correct Answer - A

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