1.

A body takes just twice the time as long to slide down a plane inclined at 30o to the horizontal as if the plane were frictionless.  The coefficient of friction between the body and the plane is                               [JIPMER 1999]

A.             \[\frac{\sqrt{3}}{4}\]            
B.             \[\sqrt{3}\]
C.             \[\frac{4}{3}\]
D.             \[\frac{3}{4}\]
Answer» B.             \[\sqrt{3}\]


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