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A mass M, attached to a horizontal spring, executes S.H.M. with amplitude A1. When the mass M passes through its mean position then a smaller mass m is placed over it and both of them move together with amplitude A2. The ratio of (A1A2) is :


( A ) (MM+m)1/2
( B ) (M+mM)1/2
( C ) M+mM
( D ) MM+m

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