Question

which ems wave has a wavelength equal to the size of a needle point and is used in heat lamps for reptiles as well as night vision technology? microwaves infrared radio waves visible

Explanation:

Infrared waves have wavelengths in the range that can be comparable to the size of a needle point. Infrared radiation is emitted as heat, which is why it is used in heat lamps for reptiles (to provide warmth). Night - vision technology also works based on detecting infrared radiation (either emitted by warm objects or infrared light sources used to illuminate the scene which is then detected by the night - vision device). Microwaves have longer wavelengths (on the order of centimeters to meters), radio waves have even longer wavelengths (from meters to kilometers), and visible light has shorter wavelengths (in the range of 400 - 700 nanometers).

Answer:

Infrared