A sensor to find liquid level in a tank is a cylindrical capacitor of length with outer and conductor radii R_(0)and R_(i) respectively. When a liquid fills the tank up to height h, (h le l)tank.s bottom the dielectric in lower part is liquid (K_l)and dielectric in upper part is vapour liquid (K_r)When liquid fills the tank up to height h, the capacity of capacitor is

A sensor to find liquid level in a tank is a cylindrical capacitor of

1.	A sensor to find liquid level in a tank is a cylindrical capacitor of length with outer and conductor radii R_(0)and R_(i) respectively. When a liquid fills the tank up to height h, (h le l)tank.s bottom the dielectric in lower part is liquid (K_l)and dielectric in upper part is vapour liquid (K_r)When liquid fills the tank up to height h, the capacity of capacitor is
Answer» `(2piepsilon_0l)/(LN(R_0lR_i)){(K_f-K_v)h/l+K_v}` `(2piepsilon_0l)/(ln(R_0lR_i)){(K_v-K_f)h/l+K_i}` `(2piepsilon_0l)/(ln(R_ilR_0)){(K_v-K_l)h/l+K_v}` `(2piepsilon_0l)/(ln(R_ilR_0)){(K_v-K_l)h/l+K_v}` ANSWER :A

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