Of the following objects, which will emit mostly infrared light?
A) a cup of hot coffee
B) an LED (Light-Emitting Diode)
C) a star like our Sun
D) a red laser beam

Question

Quizplus · Accepted Answer

A cup of hot coffee emits mostly infrared light because it is at a relatively low temperature compared to objects like stars or lasers, which emit light at shorter wavelengths.

Of the Following Objects, Which Will Emit Mostly Infrared Light