Home
Class 12
PHYSICS
Which of the following frequencies will ...

Which of the following frequencies will be suitable for beyond the horizon communication using sky waves?

A

10 kHz

B

10 MHz

C

1 GHz

D

1000 GHZ

Text Solution

Verified by Experts

The correct Answer is:
b
Frequency of 10 KHz will require very large radiating antenna while frequencies 1GHz and 1000 GHz will penetrate the ionosphere and cannot be reflected by it.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • COMMUNICATION SYSTEMS

    FULL MARKS|Exercise ADDITIONAL QUESTIONS II Short Answer Questions.|13 Videos

  • COMMUNICATION SYSTEMS

    FULL MARKS|Exercise ADDITIONAL QUESTIONS  (Additional problems)|3 Videos

  • COMMUNICATION SYSTEMS

    FULL MARKS|Exercise Textual Evaluation Solved (Long Answer Questions)|6 Videos

  • ATOMIC AND NUCLEAR PHYSICS

    FULL MARKS|Exercise Additional question (Numerical Problems)|12 Videos

  • CURRENT ELECTRICITY

    FULL MARKS|Exercise Additional Questions Solved (Numerical Problems)|6 Videos

Similar Questions

Explore conceptually related problems

Which of the following has maximum frequency?

Which of the following is suitable for experiment on linkage ?

Knowledge Check

  • Which of the following represents a wave

    A
    `(x-vt)^3`
    B
    x(x+vt)
    C
    `(1)/((x+vt))`
    D
    sin(x+vt)

  • Which of the following represents a wave

    A
    `(1)/(1+vt)`
    B
    `sin (x + vt)`
    C
    `(x-vt)^3`
    D
    `x(x + vt)`

  • Which of the following represents a wave :

    A
    `(x-vt)^(3)`
    B
    `x(x+vt)`
    C
    `(1)/((x+vt))`
    D
    `sin (x+vt)`

    • Similar Questions

    Explore conceptually related problems

    Which of the following is a mechanical wave?

    Which of the following represents a wave?

    Which of the following represents a wave?

    Which of the following represents a wave?

    Which of the following represent a wave ?

    Home
    Profile