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Write the expression for energy of an el...

Write the expression for energy of an electron orbit of hydrogen atom.

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OSWAAL PUBLICATION-2019 Solved Paper I-Exercise
  1. For which angle of incidence reflected ray is completely polarised ?

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  2. Mention any one type of electron emission.

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  3. Write the expression for energy of an electron orbit of hydrogen atom.

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  4. Write the relation between Half-Life and Mean-Life of radio active ele...

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  5. Write any two basic properties of charges

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  6. Write the expression for drift velocity in terms of current and explai...

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  7. Define: (a) Magnetic declination (b)Magnetic dip. Mention the S.I. u...

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  8. Write the expression for speed of light in terms of mu(0) and epsilon(...

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  9. Write the ray diagram for formation of image in the simple microscope.

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  10. What is diffraction of light?

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  11. Write the expression for de-Broglie wavelength of electrons interms of...

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  12. Distinguish between n-type and p-type semiconductos.

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  13. Derive an expression for potential energy of electric - di-pole p...

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  14. Write the expression for force per unit length between two striagh...

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  15. Distinguish between .dia. and .ferro. magnetic materials.

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  16. What is a transformer ? Mention two sources of energy loss in a transf...

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  17. Write three experimental observation of photoelectric effect.

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  18. Write the three postulates of Bohr.s atomic model.

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  19. Explain the .Conduction band. .Valence band. and .Energy gap. in semi...

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  20. What is modulation ? Write the block diagram of the receiver.

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