Final answer:
The wavelength of radiation with a frequency of 8.43 x 10^9 Hz is 3.56 x 10^2 m, which corresponds to option A.
Step-by-step explanation:
To calculate the wavelength of radiation with a given frequency, we use the formula c = fλ, where c is the speed of light in a vacuum (3.00 × 10⁸ m/s), f is the frequency, and λ is the wavelength. Given that the frequency is 8.43 × 10⁹ Hz, we need to rearrange the formula to solve for the wavelength, λ = c / f.
Substituting the given values, we get:
λ = (3.00 × 10⁸ m/s) / (8.43 × 10⁹ Hz) = 3.56 × 10 m, which corresponds to option A.