165621 A parallel plate capacitor of capacitance 100 $\mathrm{pF}$ is to be constructed by using paper sheets of $1 \mathrm{~mm}$ thickness as dielectric. If the dielectric constant of paper is 4 , the number of circular metal foils of diameter $2 \mathrm{~cm}$ each required for the purpose is
165621 A parallel plate capacitor of capacitance 100 $\mathrm{pF}$ is to be constructed by using paper sheets of $1 \mathrm{~mm}$ thickness as dielectric. If the dielectric constant of paper is 4 , the number of circular metal foils of diameter $2 \mathrm{~cm}$ each required for the purpose is
165621 A parallel plate capacitor of capacitance 100 $\mathrm{pF}$ is to be constructed by using paper sheets of $1 \mathrm{~mm}$ thickness as dielectric. If the dielectric constant of paper is 4 , the number of circular metal foils of diameter $2 \mathrm{~cm}$ each required for the purpose is
165621 A parallel plate capacitor of capacitance 100 $\mathrm{pF}$ is to be constructed by using paper sheets of $1 \mathrm{~mm}$ thickness as dielectric. If the dielectric constant of paper is 4 , the number of circular metal foils of diameter $2 \mathrm{~cm}$ each required for the purpose is