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Assertion: A body of weight 10N (W) is a...

Assertion: A body of weight 10N (W) is at rest on an inclined plane `(mu=sqrt(3)/(2))` making an angle of `30^(@)` with the horizontal. The force of friction acting on it is 5N
Reason: In above situation, the limiting force of friction is given by `f_("limitting")=mu W cos theta=7.5N`.

A

If both assertion `&` Reason are True `&` the Reason is a corrrect explanation of the Asserion.

B

If both Assertion `&` Reason are True but Reason is not correct explanation of the Assertion.

C

If Assertion is Trie but the Reason is False.

D

If both Assertion `&` Reason are false

Text Solution

Verified by Experts

The correct Answer is:
B
`f=mg sin theta=10xx(1)/(2)=5N`
`f_("max")=mu mg cos theta=7.5N`
NO explanation for friction `lt f` (limmiting)
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