Q. Photosynthetically active radiation (PAR) represents which of the following range of wavelength?
  • (A) 340-450 nm
  • (B) 400-700 nm
  • (C) 450-950 nm
  • (D) 500-600 nm
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✅ Correct Answer: (B) 400-700 nm

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Akash Lawaniya
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