Question

Which approximate wavelength ranges are generally not visible to human eye?Answer the given question in brief.

Answer 1

Explanation:

We usually refer to visible light as having wavelengths of between 400 nm and 750 nm. (The retina of the eye actually responds to the lowest ultraviolet frequencies, but these do not normally reach the retina because they are absorbed by the cornea and lens of the eye.)

Answer 2

Answer:

Explanation:

The visible spectrum is the part visible to the human eye of the electromagnetic spectrum. In this spectrum of wavelengths, electromagnetic radiation is called visible light or merely light. A typical human eye will react to approximately 380 to 740 nanometers of wavelength.

Since, the retina of the eye responds to the lowest ultraviolet frequencies, still these do not normally reach the retina because they are absorbed by the cornea and lens of the eye. The colour violet has the shortest wavelength, of around 380 nanometers, while the colour red has the longest wavelength, of around 700 nanometers.