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How is the speed of em-waves in vacuum d...

How is the speed of em-waves in vacuum determined by the electric and magnetic fields ?

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What is the speed of e.m. waves in vacuum?

In a region of space with mutually perpendicular electric and magnetic fields, a charged particle moves without deflection, with a speed very much smaller tan the speed of light in vacuum (c). The energy densities due to the electric and magnetic fields are u_(E) and u_(B) respectively.

Write the relation for the speed of electromagnetic wave in terms of the amplitudes of electric and magnetic fields.

The speed of electromagnetic wave in vacuum

A : In an EM wave the magnitude of the electric field vector is more than the magnitude of the magnetic field vector. R : Energy of the EM wave is shared equally between the electric and magnetic fields.

What is the intensity of an electromagnetic wave in terms of electric and magnetic field?

When light propagates in vacuum there is an electric field and a magnetic field. These fields

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MODERN PUBLICATION-ELECTROMAGNETIC WAVES-REVISION EXERCISES ( VERY SHORT ANSWER QUESTIONS)
  1. Name the electromagnetic radiations which are produced when high energ...

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  2. Name the electromagnetic waves used for studying crystal structure of ...

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  3. How is the speed of em-waves in vacuum determined by the electric an...

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  4. What is the frequency range of radio waves?

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  5. Which part of electromagnetic spectrum is detected by a human eye?

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  6. Welders wear special glass goggles ro facemask with glass window to pr...

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  7. What is the cause of the depletion of the ozone layer?

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  8. Why microwaves are used in radar not radiowaves?

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  9. What is the name given to the part of electromagnetic spectrum which i...

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  10. Which part of electromagnetic spectrum is absorbed by ozone layer?

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  11. How are radio waves produced?

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  12. Write the expression for velocity of electromagnetic waves.

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  13. Name any two properties of electromagnetic waves which are common to a...

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  14. Name the electromagnetic wave that is used to take radiograph of fract...

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  15. Write the expression for speed of light in terms of 'mu0 ' and 'epsi...

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  16. If the intensity of incident radio wave is 3 Watt/m^2,what is the pres...

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  17. What does the cross product of electric and magnetic field vectors (ve...

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  18. Which part of electromagnetic spectrum is produced in nuclear reaction...

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  19. Name any two electromagnetic waves. State any one similarity and one d...

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  20. Why a metal container should not be used in a microwave oven?

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