It is theorized that a pulsar only emits X-rays and visible light during its early history.What do you suppose is the basis of this theory?
A)As the pulsar's energy dissipates,the frequency of the energy it emits drops.
B)X-rays are likely the result of radioactive decay,which only can occur in a pulsar's early history.
C)X-rays and visible light are both part of the electromagnetic spectrum.
D)The pulsars high rate of spin produces a magnetic field that,over time,slows the pulsar down.

Question

Quizplus · Accepted Answer

The theory is based on the fact that as the pulsar's energy dissipates, the frequency of the energy it emits drops. X-rays and visible light have higher frequencies, so they are more likely to be emitted during the pulsar's early history when it has more energy to release. As the pulsar slows down, its frequency drops and it emits lower energy radiation such as radio waves.

It Is Theorized That a Pulsar Only Emits X-Rays and Visible