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JEE Main 08 Apr 2018 Code A Solved Paper

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Question : 9

Total: 90

A solid sphere of radius r made of a soft material of bulk modulus K is surrounded by a liquid in a cylindrical container. A massless piston of area of floats on the surface of the liquid, covering entire cross section of cylindrical container. When a mass m is placed on the surface of the piston to compress the liquid, the fractional decrement in the radius of the sphere, (

) is

Ka
mg
Ka
3mg
mg
3Ka
mg
Ka

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