A thin conducting rod MN of mass \( 20 \, \text{gm} \), length \( 25 \, \text{cm} \) and resistance \( 10 \, \Omega \) is held on frictionless, long, perfectly conducting vertical rails as shown in the figure. There is a uniform magnetic field \( B_{0} = 4 \, \text{T} \) directed perpendicular to the plane of the rod-rail arrangement. The rod is released from rest at time \( t = 0 \) and it moves down along the rails. Assume air drag is negligible. Match each quantity in List-I with an appropriate value from List-II, and choose the correct option.
[Given: The acceleration due to gravity \( g = 10 \, \text{m} \, \text{s}^{-2} \) and \( e^{-1} = 0.4 \)]
