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? radio waves infrared visible microwaves

Explanation:

Infrared waves have wavelengths in the range that can be comparable to the size of a needle point. They are used in heat lamps (as they emit heat) and in night - vision technology (as they can detect heat signatures). Radio waves have much longer wavelengths. Visible light has wavelengths in the range of \(400 - 700\) nm (much smaller than a needle point in most cases). Microwaves have wavelengths longer than infrared but shorter than radio waves and are not typically used in the described applications in the same way as infrared.

Answer:

Infrared