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Question
A 100 m long antenna is mounted on a 500 m tall building. The complex can become a transmission tower for waves with λ.
Options
~ 400 m
~ 25 m
~ 150 m
~ 2400 m
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Solution
~ 400 m
Explanation:
The length of the building is (l).
l = 500 m
and length of antenna = 100 m
and we know, the wavelength of the wave which can be transmitted by
L = `λ/4`
So, λ ~ 4l = 4 × 100 = 400 m
Wavelength (λ) is nearly equal to 400 m.
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