A laser falls into a black hole,but it continues to emit light directly away from the black hole as it does so.How does the light appear to a distant observer as the laser gets closer to the black hole?

Question

Quizplus · Accepted Answer

This is an example of gravitational redshift, which occurs when light leaves a gravitational field and loses energy. As the laser approaches the black hole, the gravitational pull becomes stronger and the light emitted by the laser becomes redder due to its loss of energy.

A Laser Falls into a Black Hole,but It Continues to Emit