FORESTRY
REMOTE SENSING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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0.4 to 0.7 µm
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0.7 µm to 1mm
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0.4 to 1mm
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(b) 3.5 and 20 µm
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Detailed explanation-1: -The visible wavelengths cover a range from approximately 0.4 to 0.7 µm. The longest visible wavelength is red and the shortest is violet. Common wavelengths of what we perceive as particular colours from the visible portion of the spectrum are listed below.
Detailed explanation-2: -The visible light spectrum is the segment of the electromagnetic spectrum that the human eye can view. More simply, this range of wavelengths is called visible light. Typically, the human eye can detect wavelengths from 380 to 700 nanometers.
Detailed explanation-3: -“A typical human eye will respond to wavelengths from about to about nanometers.” The red colour has the highest wavelength and the shortest frequency. The wavelength of the red colour is between to nanometers. Violet colour has the smallest wavelength and the highest frequency.
Detailed explanation-4: -Light is simply the visible portion of the electromagnetic spectrum that lies between 0.40 and 0.76 m. A body that emits some radiation in the visible range is called a light source.