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The difference between the upper and low...

The difference between the upper and lower frequency limits of the signal is called the.....

A

range

B

repeater

C

bandwith

D

noise

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CHETANA PUBLICATION-ELECTROMAGNETIC WAVES AND COMMUNICATON SYSTEM-EXERCISE
  1. The outermost layer of the earth's atmosphere is........

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  2. The antenna behaves as resonant circuit only when its length is..........

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  3. The difference between the upper and lower frequency limits of the sig...

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  4. The layer that adsorbs largest proportion of UV rays is

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  5. Speed of electromagnetic waves is given

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  6. The lower layer of the earth's atmosphere is called.

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  7. Which of the following is NOT a part of electromagnetic spectrum?

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  8. Operators working on X-ray equipment have a chance of getting skin dis...

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  9. The electromagnetic spectrum contains different electromagnetic waves ...

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  10. In T.V. and V.C.R. remote control uses

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  11. The natural source of Ultraviolet rays is

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  12. Radio waves and visible light in vacuum have

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  13. To induce an e.m.f. in the coil

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  14. Which of the following waves are not electromagnetic waves?

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  15. Electromagnetic waves were first produced in the laboratory by

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  16. The.....% of the solar radians are infrared in nature.

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  17. Ultraviolet rays can NOT pass through

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  18. The air in the stratosphere contains

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  19. Which of the following statements is NOT CORRECT?

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  20. The radio waves reflected from.......are called space wave.

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