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The line charge density of a semicircula...

The line charge density of a semicircular ring of radius R is `lambda`. Find electric field intensity at the centre of the ring. What is the total charge of an electric dipole?

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UNITED BOOK HOUSE-MODEL PAPER SET-02-EXERCISE
  1. What is modem? How is it used?

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  2. A positivley charged infinite plane sheet has surface charge densit...

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  3. The line charge density of a semicircular ring of radius R is lambda. ...

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  4. Find the potential at the centre of a square of side sqrt2 m which ca...

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  5. Find magnetic moment of an electron revolving in an orbit and hence d...

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  6. A straight wire is used ot form a semi-circular wire of radius 2cm. IF...

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  7. A convex lens whose redius of curvatures of both surfaces are same, re...

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  8. Why lens formula is called "conjugate focii" relation?

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  9. If 'f' is the focal length of a lens then prove uv=f^2. U and V repres...

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  10. What is meant by stopping potential in photoelectric emission? Does th...

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  11. The wavelength which is generated from microwave oven is 1 cm. In this...

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  12. Show the unit of h/(mv) is equal to that of wavelength.

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  13. The wavelength of photon of lambda is equal to the de-Broglie wave len...

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  14. What is the unit of radioactivity?

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  15. What is the unit of radioactivity?

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  16. What is the relation between mass defect and binding energy?

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  17. Draw a characteristics curve of zener diode showing the variation of v...

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  18. Substract 1101-1011=? (1's complement method)

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  19. In a transistor the change in collector current is 706 mA for the chan...

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  20. The internal resistance of two cells are I Omega and 2 Omega. Their e...

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