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A 100 m long anteena is mounted on a 500...

A `100 m` long anteena 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

Text Solution

Verified by Experts

The correct Answer is:
A
Length of antenna `ge lambda/4`
` rArr l ge lambda/4`
`rArr lambda le 4xx l`
or ` rArr lambda le400 m`.
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