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What its the number of revolution per se...

What its the number of revolution per second of revolving electron in first Bohr orbit?

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UNITED BOOK HOUSE-MODEL PAPER SET-02-EXERCISE
  1. What is microwave? Why is ti used in RADAR?

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  2. Write two name of e.m. wave. Give one similarity and one dissimilarity...

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  3. What its the number of revolution per second of revolving electron in ...

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  4. 92^(U^(238)) undergoes a series of changes by emitting alpha and beta ...

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  5. What is modem? How is it used?

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

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

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

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

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

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

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

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

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

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

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

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

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  18. What is the unit of radioactivity?

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  19. What is the unit of radioactivity?

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

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