The wavelength of signals from a radio transmitter is 1500mm and the frequency is 200kHz. What is the wavelength for a transmitter operating at 100kHz?
A
7500m
B
300m
C
75m
D
15m
Verified Correct Answer: B.
Physical Principles & Numerical Solution
\(\lambda\)1F1 = \(\lambda\)2F2
1500 x 200000 = 1000000 x \(\lambda\)2
\(\lambda\)2 = 300m
Source: Myschool Past Questions Archive (Record #27837)