Question

How intensity varies with wavelength?
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Answer 1

The height of this rectangle is one (as in the number 1 with no units) and its width is one wavelength. That gives an area of one wavelength and a half-area of half a wavelength.

∆s(x,t) = instantaneous displacement at any position (x) and time (t)

ƒ = frequency

λ = wavelength

Answer 2

Explanation:

Intensity of light is proportional to energy of light, which is proportional to frequency of light (and number of photons). Frequency of light is inversely proportional to wavelength of light. Thus, intensity is inversely proportional to wavelength, if other variables are held constant.