Answer:
The correct answer is 1200 kilohertz.
Step-by-step explanation:
Frequency of a radio signal wave is given to be inversely related to its wavelength.
Let frequency of a radio signal be f and it's wavelength be w.
f ∝ [tex]\frac{1}{w}[/tex]
⇒ f = [tex]\frac{k}{w}[/tex] ; [ where k is the constant of proportionality]
⇒ f × w = k
Given wavelength and frequency of a signal is 375 meters and 800 kilohertz respectively.
Therefore the value of k = 375 × 800 = 300000
We need to find the frequency of the radio signal of wavelength 250 meters. The frequency is [tex]\frac{300000}{250}[/tex] = 1200 kilohertz.
