Turn the Light On
Many of these questions have the same form, they just come in a different set of clothes or a different set of details, or they look differently.
“Turn the light on” is similar to “Turn the bus around,” but, unlike the bus, turning the light on is a singular act. It floods the room with light even if the room has been dark for 40 years. And don’t pretend that a darkened light bulb has no value to you.