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What is sky wave propagation ?...

What is sky wave propagation ?

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The radio waves which are reflected back to the earth by ionosphere are known as sky wave propagation.
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SUBHASH PUBLICATION-SUPER MODEL QUESTION PAPER 1-QUESTION
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  2. A radioactive element ""(92) X^(238) emits one alpha- particle and one...

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  3. What is sky wave propagation ?

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  4. Mention and five properties of electric field lines.

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  5. What are the limitatons of ohm.s law?

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  6. Give the expression for period of oscillation of a magnctic dipole ( m...

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  7. Mention any three application of eddy currents.

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  8. What is displacement current? Mention its need.

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  9. Define critical angle. Write two conditions for total internal reflect...

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  10. Give the circuit symbol and truth table for OR gate

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  11. What is the function of 'receiver' in communication system ? Draw the ...

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  12. Derive an expression for the electric potential energy of a system of ...

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  13. Obtain an expression for the magnetic force on a current carrying cond...

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  14. Write three properties of paramagnetic substance.

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  15. (a) Obtain the expression for the magnetic energy stored in a solenoid...

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  16. What is resonance in series LCR circuit? Derive the expression for res...

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  17. Derive the expression for resultant displacement and amplitude when tw...

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  18. Given de- Broglie's explanation of quantisation of angular momentum as...

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  19. Give three differences between intrinsic and extrinsic semiconductors

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  20. Obtain an expression for the electric field intenstiy at a point on th...

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