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State the three postulates of Bohr's the...

State the three postulates of Bohr's theory of hydrogen atom.

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SUBHASH PUBLICATION-II PUC ANNUAL EXAMINATION QUESTION PAPER MARCH 2019-QUESTION
  1. Write the ray diagram for formation of image in the simple microscope.

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  2. What is diffraction of light?

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

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  4. Distinguish between p type and n type semiconductors

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

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

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  7. Distinguish between 'dia' and 'ferro' magnetic materials.

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  8. Mention energy losses in a transformer .

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  9. Write any three experimental observations of photoelectric effect

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  10. State the three postulates of Bohr's theory of hydrogen atom.

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

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

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  13. State Gauss's theorem. Obtain an expression for elactric field at any ...

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  14. Obtain an expression for the equivalent emf and internal resistance of...

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

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  16. Derive an expression for the impedance of a series LCR, circuit, when ...

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  17. Derive th lens maker's formula.

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  18. Explain the working of a n-p-n transistor in CE mode as an amplifier.

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  19. In a circular parallel plate capacitor radius of each plate is 5 cm an...

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  20. Two resistors are connected in series with 5V battery of negligible in...

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