Question

Determine the wavelength at which chlorophyll a shows maximum absorption? Can you determine the wavelength (colour of light) at which chlorophyll a shows the maximum absorption? Does it show another absorption peak at any other wavelengths too? if yes, which one?

Answer 1

Chlorophyll a and b are found in the chloroplasts of plants. Chlorophyll a shows maximum absorption of light with wavelengths of 430-470 nm (blue) and 660-670 nm (red). Red light corresponds to the long wavelength and blue light corresponds to the short wavelength of the visible light spectrum. The rate of photosynthesis is high in these two regions. There is another absorption peak seen at 390-430 nm (violet).