What Is the Energy (In EV) of an Optical Photon $6.43 \times 10 ^ { 14 } \mathrm {~Hz} . \left( h = 6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } \right.$

Multiple Choice

What is the energy (in eV) of an optical photon of frequency $6.43 \times 10 ^ { 14 } \mathrm {~Hz} . \left( h = 6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } \right.$ , $1 \mathrm { eV } = 1.60 \times 10 ^ { - 19 } \mathrm {~J}$ )

A) $1.62 \mathrm { eV }$
B) $3.27 \mathrm { eV }$
C) $1.94 \mathrm { eV }$
D) $2.66 \mathrm { eV }$