A monochromatic neon lamp with wavelength of 670.5 nm illuminates a photo-sensitive material which has a stopping voltage of 0.48 V. What will be the stopping voltage if the source light is changed with another source of wavelength of 474.6 nm?
(1) 0.96 V
(2) 1.25 V
(3) 0.24 V
(4) 1.5 V
