Photosynthetic active radiation (PAR) has the following range of wavelengths:
Photosynthetic active radiation (PAR) has the following range of wavelengths:
$340-450 \mathrm{~nm}$
400-700 nm
$500-600 \mathrm{~nm}$
$450-950 \mathrm{~nm}$.
Solution
Photosynthetically Active Radiation (PAR) is the amount of light available for photosynthesis, which is light in the 400 to 700 nanometer wavelength range.