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JEE Questions for Physics Communication System Quiz 14 - MCQExams.com
JEE
Physics
Communication System
Quiz 14
A wave is represented as e = 10sin(10
8
t + 6 sin 1250t) then the modulating index is
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10
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1250
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108
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6
A telephone link operating at a central frequency of 10 GHz is established. If 1% of this is available then how many telephone channel can be simultaneously given when each telephone covering a band width of 5 kHz
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2 × 104
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2 × 106
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5 × 104
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5 × 106
This question has Statement I and Statement II. Of the four choices given after the statements, choose the one that best describes the two statements.
Statement I
Sky wave signals are used for long distance radio communication. These signals are in general, less stable than ground wave signals.
Statement II
The state of ionosphere varies from hour to hour, day to day and season to season.
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Statement I is correct, Statement II is correct, Statement II is the correct explanation of Statement 1
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Statement I is correct, Statement II is correct, Statement II is not the correct explanation of Statement I
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Statement I is incorrect Statement II is correct
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Statement I is correct Statement II is incorrect
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