Two point charges placed at a certain distance 4m in air exert a force on each other. The distance at which these charges will exert the same force in a medium of dielectric constant 16 is
(1) 4 m
(2) 16 m
(3) 7 m
(4) 1 m
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Answer:
1m.
Explanation:
F=Kq1q2/r²
F'=Kq1q2/kr²
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