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. Length of a string tied to two rigid supports is 40 cm. Maximum length
  2. A common emitter amplifier is designed with n-p-n transistor (α=0.99).
  3. Energy of all molecules of a monoatomic gas having a volume V and pressure P is 3PV/2.
  4. A electric dipole is placed at an angle of 30⁰ to a non-uniform electric field.
  5. A parallel plate condenser has a uniform electric field E(V/m) in the space between