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What is LED ? State two advantages of LE...

What is LED ? State two advantages of LED over incandescent lamps.

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BINA LIBRARY-QUESTION PAPER 2012-EXERCISE
  1. Mention two limitations of Rutherfor's model of atom.

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  2. Using Gauss's theorem find the filed due to a charged thin spherical s...

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  3. Find an expression for electric filed at any position on an axial line...

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  4. Apply Kirchhoff's laws to establish the principle of a balanced Wheats...

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  5. Establish Brewster's Law regarding polarisation of light by reflection...

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  6. A condenser of capacity 500 pF is charged to a potential 100V. Find th...

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  7. State Lenz's Law of electromagnetic induction.

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  8. Draw the circuit diagram of a common emitter n-p-n transistor as an am...

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  9. What is magnifying power of an astronomical telescope? Draw the necess...

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  10. Draw a ray diagram to show the formation of final image by a compound ...

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  11. Find the expression of fringe-width beta= (lambdaD)/d for Young's doub...

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  12. In a certain star, three alpha particles undergo fusion in a single re...

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  13. What is nuclear fission and nuclear fusion?

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  14. What is the function of cladding in a typical optical fibre?

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  15. For refraction at spherical surface establish the following relation. ...

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  16. State two important differences between interference and diffraction.

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  17. Find an expression for the magnetic field at points on the axis of a c...

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  18. A rectangular coil carrying current is placed in a uniform magnetic fi...

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  19. Draw a circuit diagram of a full rectifier and explain its working.

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  20. What is LED ? State two advantages of LED over incandescent lamps.

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