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How does the electrostatic force between...

How does the electrostatic force between two point charges change, when a dielectric medium is introduced between them ?

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OSWAAL PUBLICATION-Sample Paper 7-Exercise
  1. Mention any three application of eddy currents.

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  2. What is the effect of the presence of a dielectric medium on Capacitan...

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  3. How does the electrostatic force between two point charges change, whe...

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  4. Distinguish between 'Analog and Digital signals'.

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  5. Draw the ray diagram of image formation in case of compound microscope

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  6. Obtain an expression for the force between two straight parallel condu...

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  7. How are p-type n-type semiconductors formed ?

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  8. What is (a) electric dipole moment , (b) dielectric strength ?

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  9. What is (a) electric dipole moment , (b) dielectric strength ?

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  10. The current in a coil is changing from 10 A and 8 A in 0.01 second. Th...

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  11. Derive the expression for emf induced in a straight conductor moving p...

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  12. State two conditions required for obtaining coherent sources. In Young...

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  13. Derive an expression for potential energy of a system of two charges i...

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  14. What is full wave rectification? Explain the working of a full wave re...

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  15. With the help of necessary circuit diagram explain the working of a ph...

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  16. Show that the force on each plate of a parallel plate capacitor has a ...

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  17. Distinguish between .sky waves. and .space waves. modes of propagatio...

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  18. Distinguish between .sky waves. and .space waves. modes of propagatio...

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  19. Define half-life of a radioactive substance. Derive the expression for...

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  20. A small compass needle of magnetic moment .m. is free to turn about an...

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