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A body is placed on a rough inclined pl...

A body is placed on a rough inclined plane of inclination `theta`. As the angle `theta` is the increased from `0^(@)` to `90^(@)`, the contact force between the block and the plane

A

remains constant

B

decreases.

C

first decreases then increases

D

first increases then decrease.

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The correct Answer is:
B
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