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Which one is used in ionospereic propaga...

Which one is used in ionospereic propagation?

A

Ultravilet rays

B

Infrared rays

C

Radio waves

D

Light waves.

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MODERN PUBLICATION-UNIT TEST-05-EXERCISE
  1. Which of the following has longest wavelength ?

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  2. Absorption of X-rays is maximum in which of the following material she...

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  3. Which one is used in ionospereic propagation?

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  4. Ozone layer in atmosphere is useful,because it

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  5. in a wave motion,y= a (sin9k x- omega t), y can represent

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  6. An elecric charge in uniform motion produces

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  7. The diemnsion of energy density,1/2 epsilon0 E^2, where elipson0 is pe...

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  8. Let [epsilon0] denote the dimensational formula of the permittivity of...

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  9. A uniform but time-varying magnetic field B(t) exists with in a circul...

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  10. The SI unit of displacement current is

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  11. The displacement current flows in the dielectric of a capacitor, when...

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  12. The displacement current is produced across the gap between the two pl...

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  13. Electromagnetic waves are produced by

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  14. Which of the following statements is a wrong one?Electromagnetic wavs

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  15. A magnetic field can be produced by

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  16. The speed of electromagnetic waves in vacuum is equal to

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  17. Dimensions of epsilon0 // mu0 is

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  18. In a plane electromagnetic wave,which of the following have zero avera...

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  19. Which of the following is indepenedent of wavelength?

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  20. The electric and magnetic fields associated with an electromagnetic wa...

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