Answer :
Which type of telescope is most useful for detecting a star that emits very long electromagnetic waves?
A. a radio telescope B. an X-ray telescope C. an optical telescope D. a gamma ray telescope
A.)a radio telescope
A. a radio telescope B. an X-ray telescope C. an optical telescope D. a gamma ray telescope
A.)a radio telescope
The telescope is most useful for detecting a star that emits very long
electromagnetic waves are optical telescopes.
What are electromagnetic waves?
These are the type of waves in which the electronic and magnetic types of waves are involved in the magnitude and they flow in the form of waves or small packets of energy.
An optical telescope magnifies or focuses on the electromagnetic part of the waves because it needs to focus or magnify on the image of the object to click and collect the data of the stars.
Therefore, a telescope that is most useful for detecting a star that emits very long electromagnetic waves is an optical telescope.
Learn more about electromagnetic waves, here:
https://brainly.com/question/13803241
#SPJ4