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what is the wavelength of red light

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CSAT Tutor, BPSC DI Tutor (Ex. Drishti IAS Senior Content Writer)

Wavelength of red light is approx. 700nm.
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Tutor

For general calculations, it is taken as 700 nm, but it can vary from 680-720 nm range as all these frequency will appear red to normal eye.
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Professional Tutor

There is not a single wavelenth of red light. There is a reference range for red light that lies between 620-780 nanometers.
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Red light is the light having highest wavelength and lowest frequency.Approximate wavelength of various colours(VIBGYOR) lie in 390-780 nm range where red light occupies the slot 780-622 nm.
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622-780 nanometre
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Each color have different wavelength range and its max for red and min for violet. But there is no specific value of wave length. Its always a range. For red its 620-750nm.
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Maths Tutor

Wavelength of visible light varies between 400 nm to 700 nm from blue to red. Wavelength of red light is 700 nm.
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Teacher

680 nanometers
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Tutor

680 nm
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Wavelength of red light is around 700nm.
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