This chapter is currently out of syllabus
1
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Match List I with List II
| List I | List II | ||
|---|---|---|---|
| A. | Troposphere | I. | Approximate 65-75 km over Earth's surface |
| B. | E-Part of Stratosphere | II. | Approximate 300 km over Earth's surface |
| C. | F$$_2$$-Part of Thermosphere | III. | Approximate 10 km over Earth's surface |
| D. | D-Part of Stratosphere | IV. | Approximate 100 km over Earth's surface |
Choose the correct answer from the options given below :
2
JEE Main 2023 (Online) 25th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
A message signal of frequency 5 kHz is used to modulate a carrier signal of frequency 2 MHz. The bandwidth for amplitude modulation is :
3
JEE Main 2023 (Online) 24th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Match List I with List II
| List-I |
List-II |
||
|---|---|---|---|
| A. | AM Broadcast | I. | 88-108 MHz |
| B. | FM Broadcast | II. | 540-1600 kHz |
| C. | Television | III. | 3.7-4.2 GHz |
| D. | Satellite Communication | IV. | 54MHz - 890MHz |
Choose the correct answer from the options given below :
4
JEE Main 2023 (Online) 24th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
A modulating signal is a square wave, as shown in the figure.
If the carrier wave is given as $$\mathrm{c(t) = 2\sin(8\pi t)}$$ volts, the modulation index is :
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