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New York State Earth Science June 2005 - Question 27 |
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Written by The Earth Science Wizard
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Saturday, 28 November 2009 08:51 |
Correct Answer: Option 1 – Violet
The visible spectrum is the portion of the electromagnetic spectrum that is visible to (can be detected by) the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light. A typical human eye will respond to wavelengths from about 380 to 750 nm. Following diagram shows the different wavelengths and their frequency visible spectrum
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Colour
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Wavelength
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Frequency
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Violet
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350-450 nm
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668-789 THz
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Indigo
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Blue
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450-495 nm
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606-668 THz
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Green
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495-570 nm
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526-606 THz
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Yellow
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570-590 nm
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508-526 THz
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Orange
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590-620 nm
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484 -508 THz
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Red
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620-750 nm
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400-484 THz
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From the visible spectrum violet has the lowest wavelength; that is 380-450 nm.
Based on these arguments, the rest of the options are incorrect
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Last Updated on Sunday, 29 November 2009 02:04 |
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