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The wave emtted by any atom or molecule ...

The wave emtted by any atom or molecule must have some finite total length .For sodium light this length(called coherne length)is 2.4 cm.Deduce
the cohernece time.Given that`gamma=5*9 xx 10^(-7)` cm and `c=3.0 xx 10^8 m s^(-1)`.

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MODERN PUBLICATION-ELECTROMAGNETIC WAVES-EXERCISE
  1. The wave emtted by any atom or molecule must have some finite total le...

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  2. Why did Maxwell introduce the concept of displacement current ?Explain...

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  3. What is displacement current?

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  4. What is displacement current?

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  5. Considering the case of a parallel plate capacitor being charged,tell ...

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  6. Show that the displacement current produced is equal to the conduction...

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  7. What is the source of displacement current?

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  8. A capacitor ,made of two parallel plates,each of area A and separaion ...

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  9. What are electromagnetic waves?

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  10. What are e.m. waves?How are they produced?

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  11. Draw a labelled diagram of Hertz's experiment set up to produce electr...

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  12. Explain with the help of a diagram, Hertz experiment for the productio...

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  13. Hertz,in his historical experiment ,produced stationary electromagneti...

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  14. Draw a labelled diagram of Hertz's experiment set up to produce electr...

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  15. The source of electromagnetic waves can be a charge.

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  16. How does a charge q oscillating at certain frequency produce electroma...

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  17. Why is it not possible to produce electro-megnetic waves in the visibl...

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  18. What are electromagnetic waves?

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  19. Prove that electromagnetic waves are transverse in nature.

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  20. What do you understand by electromagnetic waves? Give their important ...

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  21. What do you understand by electromagnetic waves? Give their important ...

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