Two equal lumps of putty are suspended s...

Two equal lumps of putty are suspended side by side from two long strings so that they are just touching. One is drawn aside so that its centre of gravity rises a vertical distance h. It is released and then collides inelastically with the other one. The vertical distance risen by the centre of gravity of the combination is -

`3h//4`

`h//2`

`h//4`

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