Final answer:
To calculate the wavelength for a frequency of 1.2×10³ Hz and using the speed of light as 3×10¸ m/s, you use the formula c = fλ which gives us a wavelength of 250,000 meters or 250 kilometers.
Step-by-step explanation:
The question asks us to calculate the wavelength of radiation with a given frequency. In physics, the relationship between wavelength (λ), frequency (f), and the speed of light (c) is given by the formula c = fλ. Given a frequency of 1.2×10³ Hz and the speed of light as 3×10&sup8; m/s, we can rearrange the formula to solve for wavelength: λ = c / f.
Plugging in the values:
- λ = 3×10&sup8; m/s / (1.2×10³ Hz)
- λ = 3×10&sup8; m/s / 1.2×10³ s-1
- λ = 250,000 m
Hence, the wavelength of radiation is 250,000 meters, or 250 kilometers.