Question

o
A large hill blocks the direct path between a transmitter of radio waves and a receiver, as shown.
transmitter
hill
receiver
The receiver picks up the signal from the transmitter even though the radio waves do not travel
through the hill.
Which row is correct?
A possible way
for this to happen is
A stronger signal is
received using
A
diffraction round the hill.
B
diffraction round the hill.
longer wavelengths.
shorter wavelengths
longfa wavelengths.
shorter wavelengths.
С
refraction round the hill.
D
refraction round the hill.

Answer 1

Answer:

It is on the mountain for 20 km