MHT CET Physics question

PhysicsElectric Charges and FieldsMHT CET

Two point charges each having charge 'q' C are kept in such a way that the distance between them is 'r' m and force experienced by them is 'F' newton. They are moved so that the force becomes N, then the distance between them is [MHT-CET 2016]

Answer: (C)

Solution

, so needs and ; 4r would

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Question ID VK-070727