SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Magenta light is really a mixture of
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red and yellow light.
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red and cyan light.
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yellow and green light
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red and blue light.
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Explanation:
Detailed explanation-1: -Magenta absorbs its complementary color-green. Thus, green is subtracted from white light. That leaves red and blue light to be transmitted by the filter. For this reason, the filter will appear magenta (recall that magenta light is a mixture of red and blue light) when illuminated with white light.
Detailed explanation-2: -When the blue and red lights mix, the result is magenta.
Detailed explanation-3: -Blue is a frequency of about 450nm, red is 750nm. When these two are mixed together, we get magenta, which is a kind of bluish-violet. But, violet is 390nm, so we are getting something with a lower wavelength (maybe 425nm or something).
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