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JEE Main Physics question

PhysicsMechanical Properties of SolidsJEE Main

A metallic sphere of radius 1 m is given a negative charge of in air. If the bulk modulus is , volume strain in the sphere is

Answer: 5.65

Solution

The self-repulsion of charge on the sphere's surface produces an outward electrostatic pressure , where .

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Question ID VK-155220