What Is the Longest Wavelength of Light That Can Cause

Multiple Choice

What is the longest wavelength of light that can cause photoelectron emission from a metal that has a work function of $2.20 \mathrm { eV } ? \left( 1 \mathrm { eV } = 1.60 \times 10 ^ { - 19 } \mathrm {~J} , c = 3.00 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s } , h = 6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } \right)$

A) $610 \mathrm {~nm}$
B) $565 \mathrm {~nm}$
C) $257 \mathrm {~nm}$
D) $344 \mathrm {~nm}$
E) $417 \mathrm {~nm}$