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Explain electromagnetic radiations....

Explain electromagnetic radiations.

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Electromagneitc radiations are due to oscillations of atoms and molecules governed by the interaction of each atom or molecule with its neighbours
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SUBHASH PUBLICATION-SUPER MODEL QUESTION PAPER ( WITH ANSWERS ) -PART D
  1. Explain electromagnetic radiations.

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  2. Derive an expression for electrical conductivity.

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  4. Explain briefly how bar magnets act as equivalent solenoids.

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  5. Derive referaction formula (for object in air and image in the denser...

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  6. State the law of radioactivity and hence, show that N=N(0)e^(-lambda ...

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  7. Show that voltage gain in a transistor amplifier in CE mode is nega...

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  8. An oil drop of 12 excess electrons is held stationary under a constant...

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  9. (a) Six lead acid type of secondary cells each of 2.0 V and internal ...

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  10. A circuit constaing 80 m H inductor and 60 muF capacitor in series is ...

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  11. Calculate the distance between the centers of 4^(th) and 7^(th) bright...

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  12. A 12.5eV electron beam is used to bombard gaseous hydrogen at room tem...

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  13. How is the electric potential at a point due to a given charge measure...

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  14. What is a hysteres curve ? Give any one application of study of hyste...

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  15. Obtain an expression for the impedance of a series LCR circuit. (using...

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  16. Obtain the expression for fringe width in the case of interference of ...

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  17. Deduce the condition for balance of a wheatstone's bridge using...

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  18. Derive the expression for magnetic field at a point on the axis of a c...

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  19. Write any five properites of ferromagnetic materials

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  20. Derive th lens maker's formula.

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  21. State the law of radioactivity and hence, show that N=N(0)e^(-lambda ...

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