The decreasing order of wavelength of infrared,microwave,ultraviolet,and gamma rays is:

The number of wavelengths in the visible spectrum is:

In which one of the following regions of the electromagnetic spectrum will the vibrational motion of molecules give rise to absorption?

Which waves are used to destroy cancer cells?

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?

In household appliances,which waves are used to operate remote control switches?