Question

A 100 m long antenna is mounted on a 500 m tall building. The complex can become a transmission tower for waves with $\lambda$

• A. ~400 m
• B. ~25 m
• C. ~150 m
• D. ~ 2400 m

Answer 1

Answer: (A)

~400 m

Answer 2

: Length of antenna, $l = 100m$

As $l = \frac{\lambda}{4}or\lambda = 4l = 4 \times 100 = 400m$