Visible light used in photosynthesis ranges from:__________? August 9, 2021May 23, 2018 by admin Visible light used in photosynthesis ranges from:__________? A. 300 – 700 nm in wavelength B. 350 – 750 nm in wavelength C. 380 – 750 nm in wavelength D. 390 – 790 nm in wavelength.