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Which has highest wave length, r-rays, x...

Which has highest wave length, r-rays, x-ray and micro wave?

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R G PUBLICATION-ELECTROMAGNETIC WAVES-EXERCISE
  1. Name the different layer of earth's atmosphere.

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  2. Why are microwave used in Radar?

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  3. Which has highest wave length, r-rays, x-ray and micro wave?

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  4. What is the frequency range of the visible portion of the electromagne...

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  5. Arrange the following radiation in descending order of wave length: x-...

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  6. Write down Maxwell's equations for steady electric field.

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  7. What modification was made by Maxwell in Amper's circuital law.

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  8. For long distance radio broadeast, we use short wave only. Why?

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  9. State two properties of e.m wave.

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  10. What oscillates in electro magnetic wave.

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  11. Why sky wave are not used in television signals.

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  12. Give the ratio of velocities of light rays of wave length 4000 overset...

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  13. Draw a diagram for a linearly polarised electromagnetic wave, propagat...

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  14. A plane electromagnetic wave of frequency 10MH tranvells in free space...

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  15. What are radio wave? How they propagate?

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  16. What is infrared waves?

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  17. Write about X-rays and how they are used as a dignostic tool in medici...

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  18. The magnetic field in a plane electromagnetic wave is given by By = 3x...

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  19. Why are microwave used in Radar?

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  20. For long distance radio broadeast, we use short wave only. Why?

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