There are two categories of ultraviolet light Ultraviolet A (UVA)has a wavelengt

Question

There are two categories of ultraviolet light Ultraviolet A (UVA)has a wavelength ranging from 320mm to 400nm It is production of vitamin D UVB with a wavelength betwen280 because causes skin cancer Find the frequency ranges UVA Enter your answer separated with commas Find the frequency range of UVB Enter your answer separated with commas What ar the ranges of the wave numbers for UVA? Enter your answer separated with commas What are the ranges of the wave number for UVA? Enter your answers separated with commas.

Explanation / Answer

using the formula c = lamda * f a) 7.5*10^14 - 9.4*10^14 b) 9.4*10^14 - 1.1*10^15 using the formula of k = 2pi / lamda c) k uva = 2*10^7 m^-1 - 1.6*10^7 m^1 d) k uvb = 2.24*10^7 m^-1 - 2*10^7 m^-1

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