A laser.
A TeleVision because to produce an image, it needs to have some light shining from the back of the screen, therefore emitting light and it has speakers on it to produce sound all from electricity.
Light bulbs. The filament in the bulb is heated in order for it to glow and produce light. This can be considered as a conversion of energy where heat energy is being transferred in light energy.
A light bulb is a common device that can produce light when electricity passes through it, causing the filament to heat up and emit light.
The name of the device that produces coherent light is LASER.
A magnifying glass is a device that uses light to produce an enlarged view of an object.
The light bulb.
Primary producers use the light and energy from the sun to produce energy. The primary producers sit on top of the trophic level and are mainly plants and algae.
An LED (light-emitting diode) is a common device that converts electrical energy into light energy. When an electric current is passed through the LED, it emits light.
An incandescent lightbulb is an example of a device that converts electrical energy into light and heat. A loudspeaker is a device that converts electrical energy into sound.
Lots of devices do that. A motor will convert electrical energy to mechanical energy (i.e., to movement); a lamp will convert it to light; a speaker will turn it to sound; etc.
When an elctron is excited (has energy) it is extremely unstable, so it falls back to its previous energy level, and when it does this it releases energy, and this energy is viewed as wavelengths of light. So the color depends on the amount of energy the atom releases when it falls back to its lower energy level.
Chemical energy will produce the light in a firefly, or in a hand-held glow tube. Electrical energy will produce the light in a light bulb. Heating something up to a high enough temperature will produce light. Burning a material may produce light.