JEE Main 2018 Physics question
A solid sphere of radius made of a soft material of bulk modulus is surrounded by a liquid in a cylindrical container. A massless piston of area floats on the surface of the liquid, covering entire cross section of cylindrical container. When a mass is placed on the surface of the piston to compress the liquid, the fractional decrement in the radius of the sphere, , is -
Answer: (C)