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Which types of waves are used in differe...

Which types of waves are used in different Electronic gadgets?

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CHETANA PUBLICATION-ELECTROMAGNETIC WAVES AND COMMUNICATON SYSTEM-EXERCISE
  1. Which types of waves are used in different Electronic gadgets?

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  2. How does energy from the sun, which is an essential requirement for li...

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  3. What are the different sources from which we get EM waves in day to da...

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  4. What is displacement current?

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  5. What is the achievement of H. Hertz regarding EM waves?

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  6. What was Sir Jagdish Chandra Bose contribution towards EM waves?

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  7. For what work was Nobel prize in 1909 in Physics awarded to G. Marconi...

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  8. State few laws relating electric and magnetic fields.

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  9. What are EM waves?

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  10. What are the direction of electric field, magnetic field and direction...

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  11. What is the source of EM waves?

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  12. Can we produce a pure electric or magnetic waves in space? Why?

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  13. How are EM waves produced?

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  14. Does an ordinary electric lamp emit EM waves?

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  15. State the mathematical expression for electric field and magnetic fiel...

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  16. State characteristics of an EM wave.

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  17. Write the formula for velocity of EM waves in vacuum and in given medi...

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  18. Write the formula for intensity of a wave in EM waves.

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  19. Calculate the frequency in MHz of a radio wave of wavelength 250 m. Re...

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  20. Calculate the wavelength in nm of an X-ray wave of frequency 2 xx 10^1...

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