Question

If the work function of a metal is 5.2 eV, the corresponding threshold wavelength is: (a) 527 nm (b) 237 nm (c) 464 nm (d) 344 nm (e) 437 nm

Answer 1

wavelength
$= 12375 \div 5.2$
=2,379.8076923077angtrom
=237 nm