The list of choices that you posted along with the question
doesn't include any items at all that can qualify as an answer.
it is a (n) pulsar
Well, yes. They couldn't work if they didn't emit electromagnetic radiation in the form of radio waves.
Radio waves do not emit visible light. Only light with wavelengths of roughly 4*10^-7 to 7*10^-7 meters are visible.
Our eyes cannot sense radio waves. Although radio waves, visible light waves, X-rays and gamme rays are all part of the Electromagnetic Spectrum, our eyes are only equipped to detect the part of the spectrum known as visible light.
no, mechanical waves are not radio waves
yes
it is a (n) pulsar
yeah, that and radio waves
Marion rivers
pulsars
No they emit radio waves. You need a radio receiver to turn what the station produces into sound.
They emit: gamma rays, radio waves, and x-rays. Some stars emit T.V. rays
Well, yes. They couldn't work if they didn't emit electromagnetic radiation in the form of radio waves.
Classical they will emit electromagnetic waves (light and radio waves). Quantum effects might limit this since if the electrons are in the ground state (or all lower states are occupied) they can not emit any photons (quanta of electromagnetic waves).
Well, yes. They couldn't work if they didn't emit electromagnetic radiation in the form of radio waves.
Either a radio galaxy or a quasar
Scientists use radio waves to study distant quasars because quasars emit large amounts of radio waves but not much visible light.