KCET2018PhysicsCommunication System
The radius of the Earth is ( 6400 ~km ). If the height of the antenna is ( 500 ~m ) then its range is
Options
- A( 800 ~km )
- B( 100 ~km )
- C( 80 ~km )
- D( 10 ~km )
Correct answer
C. ( 80 ~km )
Step-by-step solution
Given, radius of Earth, R=6400 ~km ; height of antenna =500 ~m =500 10⁻³ ~km Now, range of antenna = 2 R h = 2 6400 500 10⁻³ ~km = 64 100 =80 ~km Therefore, range of antenna =80 ~km