An electron with kinetic energy K₁ enters between parallel plates of a capacitor at an angle '$$\alpha$$' with the plates. It leaves the plates at angle '$$\beta$$' with kinetic energy K₂. Then the ratio of kinetic energies K₁ : K₂ will be :

Two equal capacitors are first connected in series and then in parallel. The ratio of the equivalent capacities in the two cases will be :

For the given input voltage waveform V_in(t), the output voltage waveform V₀(t), across the capacitor is correctly depicted by :

In the circuit shown, charge on the 5 $$\mu $$F capacitor is :