What constitutes the central spectral band of a rainbow__________?
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Answer: B. Green
Explanation
The visible spectrum of a rainbow consists of seven colors with green located near the middle band. Optics principles show that green occupies the central position in the sequence of rainbow colors. When sunlight disperses through raindrops, green forms the exact middle spectral band of the arc. Sunlight splits into constituent wavelengths through refraction and reflection inside suspended water droplets. The standard color acronym ROYGBIV lists red, orange, yellow, green, blue, indigo, and violet sequentially. Green light has a wavelength of approximately five hundred nanometers situated in the middle spectrum.
Atmospheric optics phenomena like rainbows demonstrate how white light is composed of various distinct wavelengths. Artists and scientists study light dispersion to understand color theory and optical instrument design. Meteorologists observe rainbow formations to analyze sun angles and atmospheric moisture droplet sizes. Option A is incorrect because blue appears in the lower half of the rainbow spectrum order. Option C is incorrect because red forms the outermost upper edge of a primary rainbow arc. Option D is incorrect because indigo sits between blue and violet near the inner edge.
- Subject
- Everyday Science
- Category
- Everyday Science
- Topic
- —
- Difficulty
- medium
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