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Wave Optics

Question

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Block diagram of a receiver is shown in the figure:

(a) Identify ‘X’ and ‘Y’.

(b) Write their functions.

Solution

a) X represents Intermediate frequency stage and Y represents amplifier.

b) IF stage changes the electromagnetic wave of high frequency to a lower frequency for further detection in detector.

Function of amplifier is to enhance the power of the signals upto a required level.

Some More Questions From Wave Optics Chapter

Which of the following frequencies will be suitable for beyond-the-horizon communication using sky waves?

Frequencies in the UHF range normally propagate by means of

Digital signals
(i)    do not provide a continuous set of values,
(ii)    represent values as discrete steps,
(iii)    can utilize binary system, and
(iv)    can utilize decimal as well as binary systems.
Which of the above statements are true?

What is space wave propagation?

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