You are talking with your fiancée and looking up into a beautiful night sky and she comments "You know, it is sad that we couldn't tell if there were any black objects out there no matter how hot they were because a black object would never emit light at any temperature." You would comment:
A) Nothing. Even though you know it is a misconception and that black objects absorb and emit radiation perfectly, you don't want to ruin the evening.
B) Nothing, because she is correct.
C) Nothing, because black objects absorb light but don't emit any.
D) Nothing, because black objects emit light but don't absorb any.

Question

Quizplus · Accepted Answer

Black objects, often idealized as "black bodies" in physics, absorb all incident electromagnetic radiation but also emit radiation when heated. The radiation emitted depends on the temperature of the object, following Planck's law, meaning that even black objects can emit light if they are hot enough, contrary to the misconception mentioned.

You Are Talking with Your Fiancée and Looking Up into a Beautiful