Ask a Question

An antenna of length 25 m is mounted on top of a building of height 75 m.

+1 vote
231 views
in Physics by (98.9k points)
reopened by
An antenna of length 25 m is mounted on top of a building of height 75 m. Then the maximum wavelength of the transmission signal is close to :

(1) 100 m          (2) 200 m         (3) 300 m         (4) 400 m

1 Answer

+1 vote
by (98.9k points)
selected by
 
Best answer

The correct option is 1)100 m 

Length of antenna \(\ge {\lambda\over 4}\) 

\(\lambda \le 4\times25\) 

\(\lambda \le100m\)

Related questions

0 votes
0 answers 105 views
An object of height 7 cm is kept at a distance of 25 cm in front of a concave mirror.
asked Jun 3, 2022 in Discuss by Doubtly (98.9k points)

Doubtly is an online community for engineering students, offering:

  • Free viva questions PDFs
  • Previous year question papers (PYQs)
  • Academic doubt solutions
  • Expert-guided solutions

Get the pro version for free by logging in!

Most popular tags

jeemain geography-10th engineering physics semester 5 web computing

5.7k questions

5.1k answers

108 comments

561 users

Doubtly
...