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A block of mass 1 kg is moving towards a...

A block of mass 1 kg is moving towards a movablen vedge of amss 2 kg as shown in figure. All surfaces are smooth. When the block leaves the wedge from top, its velocity is making an angle `theta =30^(@)` with horizontal.

The value of `v_(0)` in m/s is

A

4

B

7

C

10

D

9

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