2. A beam of monochromatic light travelling has a frequency of 5.50 x 10¹4 Hz. Find its wavelength in nanometres and det
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2. A beam of monochromatic light travelling has a frequency of 5.50 x 10¹4 Hz. Find its wavelength in nanometres and det
2. A beam of monochromatic light travelling has a frequency of 5.50 x 10¹4 Hz. Find its wavelength in nanometres and determine its colour. (3) Violet Blue Green Yellow Orange Red A range (nm) 380-450 450-495 495-570 570-590 590-620 620-750
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