A Stopping Potential of 0

Multiple Choice

A stopping potential of 0.50 V is required when a phototube is illuminated with monochromatic light of wavelength 590 nm.Monochromatic light of a different wavelength is now shown on the tube,and the stopping potential is measured to be 2.30 V.What is the wavelength of this new light? (c = 3.00 × 10⁸ m/s,e = -1.60 × 10^-19 C,h = 6.626 × 10^-34 J ∙ s, 1 eV = 1.60 × 10^-19 J)

A) 320 nm
B) 300 nm
C) 340 nm
D) 360 nm
E) 410 nm