In most modern refrigerators, there is typically a light inside the refrigerator compartment, regardless of whether there is food inside or not. The purpose of the light is to illuminate the interior of the fridge when the door is opened, making it easier to see and access the items stored inside.
The light is usually activated by a switch when the refrigerator door is opened, and it automatically turns off when the door is closed. This feature allows you to see what's inside the refrigerator without the need for external lighting.
However, it's worth noting that refrigerator designs can vary, and some older models or specialized refrigerators might not have an interior light. But in the majority of household refrigerators, you can expect to find a light that helps you see the contents even when the fridge is empty.