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What is the absorption spectrum?

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What is the absorption spectrum?

(a) The graph produced by absorption of light

(b) The graph shows the photochemical reaction

(c) The graph produced by absorption of oxygen

(d) The graph shows oxygen evolution at a different wavelength

This question was posed to me during an interview.

Question is taken from Photosynthesis topic in division Bioenergetics and Metabolism of Life Sciences

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Right answer is (a) The graph produced by absorption of light

Explanation: Absorption spectrum is the graph showing the absorption of light by the pigment as the function of the wavelength. Photosynthetic pigment absorbs light in the visible and infrared region.

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