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प्रश्न
Which of the following is photosynthetically active radiation?
विकल्प
X-rays
ultraviolet
infrared
visible light
MCQ
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उत्तर
visible light
Explanation:
Visible light, approximately 400–700 nm in wavelength, is used in photosynthesis and is called photosynthetically active radiation. X-rays, ultraviolet and infrared are outside this visible range.
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