Suppose an astronomical satellite observes the Orion Nebula at a wavelength of 1250 nm. In what wavelength range is this satellite observing?
A) X-ray
B) ultraviolet
C) infrared
D) visible light

Question

Quizplus · Accepted Answer

The wavelength of 1250 nm falls into the infrared range of the electromagnetic spectrum. Visible light ranges from about 380 nm to 750 nm, ultraviolet light is from about 10 nm to 380 nm, and X-rays are from about 0.01 nm to 10 nm. Infrared light covers wavelengths from about 750 nm to 1 mm, making option C the correct choice.

Suppose an Astronomical Satellite Observes the Orion Nebula at a Wavelength