Two equal like charges in air repel eachother with a force F. By what percentage should each charge be reduced so that the force between them in medium of dielectric constant 2 reduces by `28`%`?

Two equal like charges in air repel eachother with a force F. By what

1.	Two equal like charges in air repel eachother with a force F. By what percentage should each charge be reduced so that the force between them in medium of dielectric constant 2 reduces by `28`%`?
Answer» This display of light is often called sparking. It occurs due to electric discharge of the electrostatic changes produced in chewing the winter green life saver.

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Two equal like charges in air repel eachother with a force F. By what percentage should each charge be reduced so that the force between them in medium of dielectric constant 2 reduces by `28`%`?

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