Explanation:
Wavelength range of ultraviolet radiations is from 200 nm to 400 nm.
Let minimum wavelength, [tex]\lambda_1=200\times 10^{-9}\ m[/tex]
Maximum wavelength, [tex]\lambda_2=400\times 10^{-9}\ m[/tex]
Speed of light, [tex]c=3\times 10^8\ m/s[/tex]
Let f₁ is the minimum frequency and f₂ is the maximum frequency. It can be calculated as :
Minimum frequency, [tex]f_1=\dfrac{c}{\lambda_1}[/tex]
[tex]f_1=\dfrac{3\times 10^8}{200\times 10^{-9}}[/tex]
[tex]f_1=1.5\times 10^{15}\ Hz[/tex]
Maximum frequency, [tex]f_2=\dfrac{c}{\lambda_2}[/tex]
[tex]f_2=\dfrac{3\times 10^8}{400\times 10^{-9}}[/tex]
[tex]f_2=7.5\times 10^{14}\ Hz[/tex]
So, the frequency range of ultraviolet radiation is from [tex]1.5\times 10^{15}\ Hz[/tex] to [tex]7.5\times 10^{14}\ Hz[/tex]. Hence, this is the required solution.
