L An equilateral prism of refractive index 1.45 is surrounded by water of refractive index 133 A Tow beam
of light is incident normally on one face of the prism Find the direction of the emergent ray.

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

your answer is c! hope this : )

conduct current i mean it makes sense