The wavelength of ultraviolet radiation is ..

Question 1 Report

The wavelength of ultraviolet radiation is 400nm. If the speed of light in air is 3 x 108ms-1, then the frequency of the ultraviolet radiation is

1.3 x 1015Hz

7.5 x 105Hz

1.2 x 1011Hz

7.5 x 1014Hz

Answer Details

F = $\frac{V}{λ}$

= $\frac{3 \times 10^{8}}{400 \times 10^{9}}$

= 75 x 1015Hz