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As radio waves of low frequencies cannot...

As radio waves of low frequencies cannot be transmitted to long distances, a high frequency carrier signal is superposed on it.This process is called—

A

Amplification

B

Rectification

C

Modulation

D

Oscillation

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UNITED BOOK HOUSE-MODEL PAPER SET-08-EXERCISE
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  8. What is polarisation of light?

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  9. Write down the symbol and truth table OR gate.

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  10. What is forbidden energy gap?

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  11. When a shunt S is connected across gaivanomenter of resistence G, 1/n...

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  12. Why is potentiometer preferred to voltmeter for the measurement of emf...

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  13. How does the magnetic moment of a circular coil vary with its radius?

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  14. How can you find the direction of the magnetic moment?

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  15. A long wire carries a current of 90 A in the east to west direction. W...

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  18. A plane electromagnetic wave is moving along X-direction in free space...

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  19. On the X-Y plane two point charges "+q and -q are placed at positions ...

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