Answer:
frequency of light is [tex]70.47\times 10^{15} \ per\ second[/tex]
Explanation:
Given
wavelength of light = [tex]4.257\times 10^{-7}\ cm = 4.257\times 10^{-7} \times 10^{-2} \ m= 4.257\times 10^{-9}\ m[/tex]
Speed of Light = [tex]3\times 10^8 \ m/s[/tex]
∴ Frequency of Light = [tex]\frac{\textrm{Speed of Light}}{\textrm{wavelength}}=\frac{3\times 10^8}{4.257\times 10^{-9}}= 70.47\times 10^{15} \ per\ second[/tex]
