A car’s radio antenna is located at a distance of 56.983 m from a brick wall, which is
assumed to act like a dense barrier. The car is attempting to listen to an FM radio
station with a frequency of 89.5 MHz. These waves travel at the speed of light, 3.00
× 108 m/s. The waves are simultaneously received by the car’s antenna directly from
the distant broadcasting tower, as well as reflected from the brick wall. Describe the
type of interference at the antenna (constructive or destructive) and as such, the
radio reception in the car (fuzzy or clear), and prove your answer.
I don't know the equations for interference... I know that the condition for constructive is m[tex]\lambda[/tex] and for destructive is (m+0.5)[tex]\lambda[/tex].
The Attempt at a Solution
I'm totally stuck, as I don't know what equation to use.
Thanks for your help :)