Navigate

In communication with help of antenna if height is doubled then the range

In communication with help of antenna if height is doubled then the range covered which was initially r would become

Options

(a) √2r
(b) 3r
(c) 4r
(d) 5r

Correct Answer:

√2r

Explanation:

Range r = √(2Rh)

Where R is the radius of the earth and h is the height of the antenna

.·. r’ = √[2R(2h)] = √2 [√(2Rh)] = √2 r

AIIMS2007
admin:

Related Questions

  1. When current I is flowing through a conductor, the drift velocity is v.
  2. In the elastic collision of objects
  3. A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof
  4. If the image formed by a convex mirror of focal length 30 cm is a quarter of the size
  5. The turn ratio of a transformer is 1:2. An electrolytic dc cell of emf 2 volt is connected