Radius of the curved road on national highway is $R$. Width of the road is $b$. The outer edge of the road is raised by $h$ with respect to inner edge so that a car with velocity $v$ can pass safe over it. The value of $h$ is
  • A$\frac{{{v^2}b}}{{Rg}}$
  • B$\frac{v}{{Rgb}}$
  • C$\frac{{{v^2}R}}{g}$
  • D$\frac{{{v^2}b}}{R}$
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