A block kept on a rough inclined plane, as shown in the figure, remains at rest upto a maximum force $2\,N$ down the inclined plane. The maximum external force up the inclined plane that does not move the block is $10\,N.$ The coefficient of static friction between the block and the plane is : [Take $g = 10\,m/s^2$ ]
  • A$\frac{{\sqrt 3 }}{2}$
  • B$\frac{{\sqrt 3 }}{4}$
  • C$\frac {1}{2}$
  • D$\frac {2}{3}$
JEE MAIN 2019, Diffcult
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