Is a light switch a 2nd class lever?

Answer 1

It depends on the exact construction of the switch in question. Some are first class, some are second class, and some aren't levers at all.

Answer 2

Yes, a light switch can be considered a 2nd class lever. In this case, the fulcrum is located at one end, the effort is applied at the other end, and the load (turning on/off the light) is in the middle. When you push the switch down, you are applying a force, the fulcrum is the pivot point, and the load (activating the light) is in the center.