Light of wavelength 180 nm ejects photoelectron from a plate of a metal whose work function is 2 eV. If a uniform magnetic field of \[5\times {{10}^{-5}}T\] is applied parallel to plate, what would be the radius of the path followed by electrons ejected normally from the plate with maximum energy?

• A. 1.239 m
• B. 0.149 m
• C. 3.182 m
• D. 2.33 m