Aradio transmitting station operating at a frequency of 120 mhz has two identical antennas that radiate in phase. antenna b is 9.00 m to the right of antenna a. consider point p between the antennas and along the line connecting them, a horizontal distance x to the right of antenna a. for what values of x will constructive interference occur at point p?

x = 4.5 m, 5.75 m, 6.5 m, 8.25 m

Explanation:

= frequency of radio transmitting station = 120 MHz = 120 x 10⁶ Hz

= speed of the radio wave = 3 x 10⁸ ms⁻¹

= wavelength

Wavelength is given as

= distance between the two antennas = 9.00 m

= Distance of point P from the antenna A

= Distance of point P from the antenna B

= Path difference

Path difference is given as

For constructive interference, Path difference is given as

For n = 0

For n = 1

For n = 2

For n = 3

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explanation: