Which of the following are not electromagnetic waves?

The radio waves of frequency $300 \,MHz$ to $3000 \,MHz$ belong to

Write the range of frequencies of visible light.

$A$ bolometer is used to detect ...... .

What is called as the electromagnetic spectrum?

The terminology of different parts of the electromagnetic spectrum is given in the text. Use the formula $E = hv$ (for energy of a quantum of radiation: photon) and obtain the photon energy in units of $eV$ for different parts of the electromagnetic spectrum. In what way are the different scales of photon energies that you obtain related to the sources of electromagnetic radiation?