A beam of light has three wavelengths 4144 A o
A beam of light has three wavelengths 4144 A o, 4972 A ˚ and 6216 A ˚ with a total intensity of 3.6×10^−3 Wm^−2 equally distributed amongst the three wavelengths. The beam falls normally on an area 1.0 cm^2 of a clean metallic surface of work function 2.3 eV. Assume that the there is no loss of light by reflection and that each energetically capable photon ejects one electron. Calculate a number of photoelectrons liberated in two seconds.
16
Sep
A beam of light has three wavelengths 4144 A o, 4972 A ˚ and 6216 A ˚ with a total intensity of 3.6×10^−3 Wm^−2 equally distributed amongst the three wavelengths. The beam falls normally on an area 1.0 cm^2 of a clean metallic surface of work function 2.3 eV. Assume that the there is no [...]