Home
Class 12
PHYSICS
Long distance radio broadcasts use short...

Long distance radio broadcasts use short - wave bands. Why ?

Text Solution

Verified by Experts

Ionosphere reflects waves in these bands.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTROMAGNETIC WAVES

    NEW JOYTHI PUBLICATION|Exercise PRACTICE PROBLEMS FOR SELF ASSESSMENT|7 Videos
  • ELECTROMAGNETIC WAVES

    NEW JOYTHI PUBLICATION|Exercise EVALUATION QUESTIONS AND ANSWERS|16 Videos
  • ELECTROMAGNETIC WAVES

    NEW JOYTHI PUBLICATION|Exercise SOLUTIONS TO EXERCISES FROM NCERT TEXT|14 Videos
  • ELECTROMAGNETIC INDUCTION

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|13 Videos
  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    NEW JOYTHI PUBLICATION|Exercise Competitive Exam Corner|22 Videos

Similar Questions

Explore conceptually related problems

A radio station broadcasts its programme at 219.3m wavelength. Determine the frequency of radio waves if velocity of radio waves 3 xx 10^(8)m//s .

Why longitudinal waves can't be polarized? OR Light waves can be polarized while sound waves can't. Why?

Knowledge Check

  • AM is used for broadcast because

    A
    it is more noise immune than other modulating system
    B
    it requires less transmitting power with other modulating system
    C
    its circuit is simple
    D
    it provides bandwidth for high frequency
  • Long distance radio communication employs _________ wave propagation.

    A
    ground
    B
    sky
    C
    space
    D
    surface
  • The mode of propagation used by short wave broadcast service is

    A
    Space wave
    B
    sky wave
    C
    ground wave
    D
    both (a) &(c )
  • Similar Questions

    Explore conceptually related problems

    Why do we use short waves for long distance radio broadcast ?

    Assertion : Short wave bands are used for transmission of radio waves to a large distance. Reason : Short waves are reflected by ionosphere

    Write the uses of Radio waves.

    When viewing through a compound microscope, our eyes should be positioned not on the eyepiece, but a short distance away from it for best viewing . why ? How much should be that short distance between the eye and eyepiece?

    From long distance, shortwave radio broadcasting_____________ wave is used.