An object that appears green in empty space is placed near but not in a black hole. To an observer far from the black hole, the object would appear
A) red.
B) green.
C) blue.
D) brown.
E) black.

Question

Quizplus · Accepted Answer

The object would appear red due to gravitational redshift, a phenomenon where light escaping the gravitational pull of a massive object (like a black hole) loses energy and shifts to the red end of the spectrum.

An Object That Appears Green in Empty Space Is Placed