Two photons, each of energy 2.5 eV are simultaneously incident on sodium metal surface. If the work function of sodium is 2.75 eV, then from its surface will be emitted.
A. one electron
B. two-electron
C. more than two electrons
D. not a single electron
Answer:D
Two photons, each of energy 2.5 eV are simultaneously incident on sodium metal surface. If the work function of sodium is 2.75 eV, then from its surface will be emitted.
A. one electron B. two-electron C. more than two electrons D. not a single electron