Problem

Light of wavelength 330 nm falling on a piece of metal ejects electrons with sufficient energy with required voltage

V_0

to prevent them from reaching a collector. In the same set up, light of wavelength 220 nm ejects electrons which require twice the voltage

V_0

to stop them in reaching a collector. The numerical value of voltage

V_0

is a.

\frac{16}{15} V

\frac{15}{16} V

\frac{15}{8} V

\frac{8}{15} V