Calculate the energy of a photon having a wavelength inthefollowing ranges.
(a) microwave, with λ =40.00 cm
1 eV
(b) visible, with λ = 400 nm
2 eV
(c) x-ray, with λ = 0.40 nm
3 eV
When light of wavelength 360 nm fallson a lithium surface,electrons havinga maximum kinetic energy of 1.15 eVare emitted.Find values for the following.(a) the work function of lithium
1 eV
(b) the cutoff wavelength
2 nm
(c) the frequency corresponding to the cutoff wavelength
3 Hz
