Photosynthetically active radiation (PAR) represents which of the following range of wave length?

400 - 700 nm

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500 - 600 nm

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450 - 950 nm

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340 - 450 nm

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Solution

The correct option is A 400 - 700 nm
Photosynthetically active radiation, often abbreviated PAR, designates the spectral range (wave band) of solar radiation from 400 to 700 nanometers, that photosynthetic organisms are able to use in the process of photosynthesis. This spectral region corresponds more or less with the range of light visible to the human eye.

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Question 03
Which range of wavelength (in nm) is called Photosynthetically Active Radiation (PAR)?
(a) 100-390 (b) 390-430 (c) 400-700 (d) 760-100,00

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