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The slope of the smooth banked horizonta...

The slope of the smooth banked horizontal road is `rho` . If the radius of the curve road is 'r' , them the maxiumum velocity with which a car can negotiate the curve will be

A

`rho rg`

B

`sqrt (rho rg)`

C

`rho//rg`

D

`sqrt (rho // rg)`

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