The capacity of a parallel plate condenser is $5\,\mu F$. When a glass plate is placed between the plates of the conductor, its potential becomes $1/8^{th}$ of the original value. The value of dielectric constant will be
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(c) $V' = \frac{V}{8}$ $==>$ $\frac{V}{K} = \frac{V}{8}$ $==>$ $K = 8$
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