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1
JEE Main 2022 (Online) 26th June Morning Shift
MCQ (Single Correct Answer)
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-1
Out of Syllabus
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Choose the correct statement for amplitude modulation :

A
Amplitude of modulating signal is varied in accordance with the information signal.
B
Amplitude of modulated signal is varied in accordance with the information signal.
C
Amplitude of carrier signal is varied in accordance with the information signal.
D
Amplitude of modulated signal is varied in accordance with the modulating signal.
2
JEE Main 2022 (Online) 25th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Match List I with List II

List - I List -II
A. Facsimile I. Static Document Image
B. Guided media Channel II. Local Broadcast Radio
C. Frequency Modulation III. Rectangular wave
D. Digital Signal IV. Optical Fiber

Choose the correct answer from the following options:

A
A-IV, B-III, C-II, D-I
B
A-I, B-IV, C-II, D-III
C
A-IV, B-II, C-III, D-I
D
A-I, B-II, C-III, D-IV
3
JEE Main 2022 (Online) 25th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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A signal of 100 THz frequency can be transmitted with maximum efficiency by :

A
Coaxial cable
B
Optical fibre
C
Twisted pair of copper wires
D
Water
4
JEE Main 2022 (Online) 24th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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A baseband signal of 3.5 MHz frequency is modulated with a carrier signal of 3.5 GHz frequency using amplitude modulation method. What should be the minimum size of antenna required to transmit the modulated signal?

A
42.8 m
B
42.8 mm
C
21.4 mm
D
21.4 m
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