A solid sphere of radius $R$ made of of material of bulk modulus $K$ is surrounded by a liquid in a cylindrical container. $A$ massless piston of area $A$ floats on the surface of the liquid. When a mass $m$ is placed on the piston to compress the liquid, the fractional change in the radius of the sphere $\delta R/R$ is
  • A$mg/AK$
  • B$mg/3AK$
  • C$mg/A$
  • D$mg/3AR$
Diffcult
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