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An electromagnetic wave of frequency v=3...

An electromagnetic wave of frequency `v=3.0 MHz` passes from vacuum into a dielectric medium with permittivity `epsilon=4.0`. Then

A

wavelength is doubled and the frequency remains unchainged

B

wavelength is doubled and frequency becomes half

C

wavelength is halved and frequency remains unchanged

D

wavelength and frequency both remain unchanged

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The correct Answer is:
C
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RESONANCE-ELECTRO MAGNETIC WAVES-Exercise 3
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  2. An electromagnetic wave in vacuum has the electric and magnetic field ...

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  3. The magnetic field In a travelling electromagnetic wave has a peak val...

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  4. During the propagation of e.m. wave in a medium

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  5. (1) Write Gauss'law for magnetism in the form of maxwell equation. (...

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  6. (1) In free space at a pont magnitude of electric field vector (vecE) ...

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  7. To which part of the electromagnetic spectrum does a wave of frequency...

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  8. Considering the case of a parallel plate capacitor being charged, show...

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  9. Write the mathmatical equation of Ampere-maxwell law.

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  10. Identify the constituent radiations of electromagnetic spectrum which ...

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

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  12. Which of the following are not electromagnetic waves ?

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  13. if lamda(v'),lamda(x) and lamda(m) represent the wavelengths of visibl...

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  14. The frequency of a light wave in a material is 2xx10^(14)Hz and wavele...

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  15. The electric and magnetic field of an electromagnetic wave is

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  16. The velocity of electromagnetic radiatior in a medium of permittivity ...

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  17. Which of the following statement is false for the properties of electr...

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  18. The electric field on an electromagnetic wave in free space is given b...

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  19. The velocity of all radiowaves in free space is 3xx10^(8),//s, the fre...

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  20. Which of these statement is false:

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