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Assertion: Id distance between the paral...

Assertion: Id distance between the parallel plates of a capacitor is halved, then its capacitance is doubled.
Reason: The capacitance depends on the introduced dielectric.

A

If both assertion and reason are ture and reason is the correct explanation of assertion.

B

If both assertin and reason are ture but reason is not the correct explanation of assertion .

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
B
The capacitance of a parallel plates capacitor is given by `C = (epsi_(0)A)/(d)` .
Where A is area of each plate, d is the distance between plantes,
`therefore " "(C_(1))/(C_(2)) = ((epsi_(0)A)/(d))/((epsi_(0)A)/(d//2)) = (1)/(2) therefore C_(2) = 2 C_(1)`
where dielectric of dielectric constant k is introduced in between the plates then the capacitance `C = ( k epsi_(0)A)/(d)` i.e., `C prop K` .
Capacitacne C depends on introduced dielectric .
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