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How does the frequency of a beam of ultr...

How does the frequency of a beam of ultraviolet light change when it travelsfrom air into glass?

A

No change

B

increases

C

decreases

D

remains same

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CHETANA PUBLICATION-ELECTROMAGNETIC WAVES AND COMMUNICATON SYSTEM-EXERCISE
  1. The EM wave emitted by theSun and responsible for heating the Earth's ...

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  2. Choose the correct options. Earth's atmosphere is rechest in

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  3. How does the frequency of a beam of ultraviolet light change when it t...

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  4. The direction of EM wave is given by

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  5. The maximum distance upto which TV transmission from a TV tower of he...

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  6. The waves used by artificial satellites for communication purposes are

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  7. If a TV telecast isto cover a radius of 640 km, what should be the hei...

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  8. In a communication system, noise is most likely to affect the signal.

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  9. For television broadcasting , the frequency employed is normally

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  10. A device that converts one form of energy into another form is termed ...

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  11. The process of regaining the information from carrier wavesis called.....

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  12. The outermost layer of the earth's atmosphere is........

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

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

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

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  16. Speed of electromagnetic waves is given

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

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

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

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  20. The electromagnetic spectrum contains different electromagnetic waves ...

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