Explain energy is called the work function

Reference no: EM13188415

In his explanation of the photoelectric effect, Einstein stated that the incident radiation had to have a minimum energy to dislodge the electron from the metal surface. This energy is called the work function. If the work function of tantalum (Ta) is 6.41 x 10-19 J, what is the longest wavelength of light that will eject an electron from Ta metal?

A. 620 nm
B. 1.03 x 10-15 m
C. 310 nm
D. 434 nm
E. 0.156 nm

Reference no: EM13188415

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