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Q.
Assertion: The dimensional formula for product of resistance and conductance is same as for dielectric constant. Reason: Both have dimensions of time constant.
AIIMSAIIMS 2009Physical World, Units and Measurements
Solution:
Both the quantities are dimensionless.
Resistance $\times$ conductance $=R \times 1 / R=\left(M^{0} L^{0} T^{0}\right)$
$=1$ and Dielectric constant $K$ is dimensionless.