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A wedge shaped block A' of mass M is at ...

A wedge shaped block A' of mass M is at rest on a smooth horizontal surface. A small block 'B' of mass 'm' placed at the top edge of inclined plane of length 'l' as shown in the figure. By the time, the block 'B' reaches the bottom end, the wedge A moves a distance of:

A

`(mL)/(M cos theta)`

B

`(mL cos theta)/(m + M)`

C

`(mL)/(m + M)`

D

Zero

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The correct Answer is:
B
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