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Electromagnetic waves are produced by...

Electromagnetic waves are produced by

A

Steady electric field

B

Steady megnetic field

C

Time varying magnetic field

D

Both (2) & (3)

Text Solution

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The correct Answer is:
C
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AAKASH INSTITUTE ENGLISH-ELECTROMAGNETIC WAVES-ASSIGNMENT (SECTION-A)(OBJECTIVE TYPE QUESTIONS (ONE OPTIONE IS CORRECT)
  1. If electric field is changing at rate of 6xx10^(6) V/ms between the pl...

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  2. An electromagnetic radiation has an energy of 13.2 keV. Then the radia...

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  3. Electromagnetic waves are produced by

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  4. An electromagneti wave propagationg through vacuum is given B=B(0)sin(...

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  5. If in a region there is a time varying electrinc field then which of t...

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  6. Displacement current goes through the gap between the plates of a capa...

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  7. Which of the following rays is not an electromagnetic wave?

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  8. An electronmagnetic wae propagating along x-axis then oscillating elec...

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  9. Hertz's expriment confirm that

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  10. The dimensional formula of radiation pressure is

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  11. An electromagnetic wave is propagating in vacuum along z-axis, the ele...

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  12. The part of electromagnetic spectrum referred as heat wave is

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  13. Welders wear special glass goggles or facemask with glass window to pr...

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  14. The momentum carried by E-M waves in vaccum is P, then energy associat...

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  15. The essential distinction between X - rays and gamma - rays is that

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  16. In a plane electromagnetic wave the electric field osciliates sinusoid...

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  17. The dimensional formula mu(0)epsilon0 is

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  18. An electromagnetic wave consists of oscillating electric and magnetic ...

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  19. Which of the following radiation has the least wavelength?

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  20. The speed of electromagnetic wave in a medium (whose dielectric consta...

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