Aphoton in a monochromatic beam of light has energy 3 ev. the wavelength is closest to: a) 4960 nm b) 1240 nm c) 413 nm d) 310 nm e) 4.8x10-19 m

Explanation:

It is given that,

Energy of the photon,

Let is the wavelength of the photon. The energy of a photon is given by :

So, the wavelength of the photon is . Hence, this is the required solution.