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Which is the correct expression of veloc...

Which is the correct expression of velocity of light?

A

`(1)/(sqrt(epsi_(0)mu_(0)))`

B

`(E_(0))/(B_(0))`

C

`(c)/(mu)`

D

All of these

Text Solution

Verified by Experts

The correct Answer is:
D
The velocity of electromagnetic waves in free space is given by
`c = (1)/(sqrt(mu_(0)epsi_(0))) = (E_(0))/(B_(0)) = 3 xx 10^(8) ms^(-1)`
Moreover, velocity of light in a medium with refractive index `mu` is, `v = (c)/(mu)`.
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DC PANDEY ENGLISH-ELECTROMAGNETIC WAVES-Sec A
  1. If E and B represent electric and magnetic field vectors of the electr...

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  2. IF E(0) and mu(0) are respectively the electric permittivity and magne...

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  3. Which is the correct expression of velocity of light?

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

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  5. The average electric field of electromagnetic waves in certain region ...

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  6. The electric and the magnetic field, associated with a electromagnetic...

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  7. The magnetic field amplitude of an electromagnetic wave is 2 xx 10^(-7...

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  8. A parallel plate capacitor is charged to 60 muC. Due to a radioactive ...

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  9. The pressure exerted by an electromagnetic wave of intensity I (Wm^(-2...

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  10. An L-c resonant circuit contains a 200 pF capacitor and a 200muH induc...

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  11. Radiation of intensity 1 W//m^(2) are striking on a metal plate. The p...

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  12. A linearly polarised electromagnetic wave given as E=E(0) hati " cos "...

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  13. The magnetic field in a plane electromagnetic wave is given by B(y) = ...

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  14. An electromagnetic wave going through vacuum is described by E= E0 s...

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  15. A plane electromagnetic wave propagating in the x-direction has wavele...

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  16. if vecE=E(0)cos(kz)cos(omegat)hati then vec(B) for electromagentic wav...

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  17. A place electromagnetic wave is propagating along the direction (hati ...

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  18. The ratio of contributions made by the eletric field and magnetic fiel...

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  19. A perfectly reflecting mirror has an area of 1cm^(2) Light enery is al...

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  20. One requires 11eV of energy to dissociate a carbon monoxide molecule i...

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