1) visible light only 2) visible light +infrared+ultraviolet 3) radio waves+infrared+visible light +ultraviolet +x ray+gamma ray
When we say light we usually mean the visible, IR and UV portions of the electromagnetic spectrum..
Electromagnetic radiation is such that if one chooses to turn a lamp's switch to its 'on' position in anticipation of the lamp to function, it could help to verify that the light circuitous is already lit.
2, they are all considered light. 3 is the electromagnetic spectrum.
light has dual behaviour.(electromagnetic wave and particle or photons) google it
1)Practically, Light is the sensation of sight. 2)It is a spectrum of light (Of two different wave lengths or of frequencies) and visible light is mono chromatic ). All these waves and monochromatic visible lights are mono-chromatic. 3) These are all electromagnetic waves.
