Which of the following electromagnetic radiations has the maximum energy per photon?

Which of the following electromagnetic radiations has the maximum energy?

Consider the electromagnetic radiations having wavelengths 200 nm, 500 nm and 1000 nm. Which wavelength(s) of the following can make visual sensation to a human eye?

Which one of the following types of radiations has the smallest wavelength ?

A photon of X-ray has energy of 1 keV. A photon of visible radiation has energy of 3 eV. In this context, which one of the following statements is not correct?

Which one of the following types of radiation has the shortest wavelength?