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Distinguish between .sky waves. and .spa...

Distinguish between .sky waves. and .space waves. modes of propagation in communication system. Why is sky wave mode propagation restricted to frequencies upto 40 MHz?

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Why sky wave propagation is not possible for wave having frequency more than 30 MHz ?

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OSWAAL PUBLICATION-Sample Paper 7-Exercise
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  2. The current in a coil is changing from 10 A and 8 A in 0.01 second. Th...

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

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

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

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

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

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

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

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

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

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  13. A compass needle, free to turn in a vertical plane orients itself wit...

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  14. A compass needle, free to turn in a vertical plane orients itself wit...

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  15. What is drift velocity of free electrons ? Deduce I = n A eV(d) where ...

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  16. A charged particle enters a region of uniform magnetic field with its ...

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  17. A charged particle enters a region of uniform magnetic field with its ...

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  18. The spectrum of a star in the visible and the ultraviolet region was o...

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  19. Calculate the resonant frequency and Q-factor of a series L-C-R circui...

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  20. In a Young.s slit experiment, the slits are separated by 0.24 mm and ...

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