For television broadcasting,the frequency employed is normally

If a source of power $4 \ kW$ produces $10^{20}$ photons/second,the radiation belongs to a part of the spectrum called

If the frequencies of $X$-rays,$\gamma$-rays,and ultraviolet rays are $a, b$,and $c$ respectively,then which of the following is correct?

The energy of the electromagnetic waves is of the order of $15\, keV$. To which part of the spectrum does it belong?

One requires $11 \ eV$ of energy to dissociate a carbon monoxide molecule into carbon and oxygen atoms. The minimum frequency of the appropriate electromagnetic radiation to achieve the dissociation lies in

Choose the correct sequence of the radiation sources in increasing order of the wavelength of electromagnetic waves produced by them.