The characteristics of the bulbs of a mushroom cover ceiling lamp can vary depending on the specific lamp. However, some common characteristics of mushroom cover ceiling lamp bulbs include:
They are typically small, with a round or mushroom-shaped cover that sits flush against the ceiling.
They can be incandescent, fluorescent, or LED bulbs.
They can have a variety of wattages, depending on the amount of light needed for the room.
They may have a dimmable feature, allowing the user to adjust the brightness of the light.
They may be energy-efficient and have a long lifespan.
It's also worth mentioning that mushroom cover ceiling lamps are also known as flush mount ceiling lights, which are typically mounted flush against the ceiling, and are perfect for low ceiling rooms.