What is true of radio telescopes?
A)They have poorer angular resolution than a refractor.
B)They have better angular resolution than a reflector.
C)They are the smallest, most compact telescopes.
D)They can only be used above the atmosphere.
E)They are most sensitive to the opacity of the ozone layer.

Question

Quizplus · Accepted Answer

Radio telescopes have poorer angular resolution than a refractor because longer wavelengths of radio waves make it difficult to achieve high resolution images. Radio telescopes have a larger wavelength compared to visible light telescopes, which results in a lower angular resolution. This is because the amount of diffraction experienced by the waves increase with increasing wavelength.

What Is True of Radio Telescopes