Two charges placed in air repel each other by a force of 10⁻⁴ N. When oil is introduced between the charges, the force becomes 2.5 x 10⁻⁵ N. The dielectric constant of oil is

Options

(a) 2.5
(b) 0.25
(c) 2
(d) 4

Correct Answer:

4

Explanation:

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