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Which one of the following is the proper...

Which one of the following is the property of a monochromatic, plane electromagnetic wave in free space?

A

Electrica and magnetic fields have a plane difference of `pi//2`

B

The energy contribution of both electric and magnetic fields are equal

C

The direction of propagation is in the direction of `B xx E`

D

The pressure exerted by the wave is the product of its speed and energy density

Text Solution

Verified by Experts

The correct Answer is:
B
The energy in EM waves is divided equally between the electric and magnetic fields.
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DC PANDEY ENGLISH-ELECTROMAGNETIC WAVES-Sec A
  1. The speed of electromagnetic wave in vacuum depends upon the source of...

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  2. The velocity of electromagnetic waves in free space can be given by re...

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  3. Which one of the following is the property of a monochromatic, plane e...

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  4. Which physical quantiy is same for x-rays and gamma -rays in vacum ?

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  5. An EM radiates outwards from a dipole antenna, with E(0) as the amplit...

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  6. The sum delilvers 10^(4) W//m^(2) of electromagnetic flux to earth's s...

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  7. If E and B represent electric and magnetic field vectors of the electr...

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

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

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

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

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

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

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

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

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

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

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

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

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

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