Observation Chart Colour Yellow Green Blue Violet Wavelength 578 nm 546 nm 480 nm 410 nm 410 nm low- high- intensity intensity Retarding Photo- Photo- Photo- Photo- Photo- potential current current current current current (V) (HA) (HA) (HA) (HA) (HA) 0.00 3.2 10.4 11.2 8.5 14.8 0.05 2.3 8.7 10.1 8.1 14.0 0.10 1.3 7.1 9.0 7.6 13.3 0.15 0.6 5.5 8.0 7.2 12.6 0.20 0.2 4.0 7.0 6.7 11.9 0.25 0 2.4 6.0 6.2 11.1 0.30 1.O 4.9 5.7 10.4 0.35 0.2 3.8 5.3 9.6 0.40 0 2.8 4.8 8.9 0.45 0 1.7 4.4 8.2 0.50 1.2 3.9 7.0 0.55 0.7 3.4 6.7 0.60 0.4 3.0 6.0 0.65 0.1 2.5 5.2 0.70 0 2.0 4.5 0.75 1.6 3.7 0.80 1.1 3.0 0.85 0.9 2.3 0.90 0.7 1.7 0.95 0.5 1.2 1.00 0.3 0.8 1.05 0.2 0.4 1.10 0.1 0.1 1.15 0 1.20 0