12. The minimum frequency for photoelectric emission incopper is 1.1 x 10 15 Hz.

Question

12. The minimum frequency for photoelectric emission incopper is 1.1 x 1015 Hz. Find the maximum energyof the photoelectrons (in electrovolts) when light of frequency 1.5x 1015Hz is directed on a copper surface. This problem has me stumped lifesaver if done by fridaymorning. 12. The minimum frequency for photoelectric emission incopper is 1.1 x 1015 Hz. Find the maximum energyof the photoelectrons (in electrovolts) when light of frequency 1.5x 1015Hz is directed on a copper surface. This problem has me stumped lifesaver if done by fridaymorning.

Explanation / Answer

We know that Kmax = h (v-vo)            =6.62 x 10-34 ( 1.5 x 1015 - 1.1 x1015 )            =2.648 x 10-19 J            =1.655 eV

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