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A force F acts between sodium and chlori...

A force F acts between sodium and chlorine ions of salt (sodium chloride) when put 1 cm apart in air. The permittivity of air and dielectric constant of water are `epsilon_(0)` and k respectively. When a piece of salt is put in water, electrical force acting between sodium and chlorine ions 1cm apart is

A

`F/k`

B

`(Fk)/(epsilon_(0))`

C

`F/(kepsilon_(0))`

D

`(Fepsilon_(0))/k`

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The correct Answer is:
A
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