Applications of E.M. Waves NEET Questions

Physics - Electromagnetic Waves

Applications of E.M. Waves MCQ Questions


13.
Wi-Fi networks typically operate at frequencies of:
A.
2.4 GHz and 5 GHz
B.
10 GHz and 20 GHz
C.
100 MHz and 200 MHz
D.
1 MHz and 5 MHz
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ANSWER :
A. 2.4 GHz and 5 GHz
14.
AM and FM in radio broadcasting refer to types of:
A.
Modulation techniques
B.
Frequencies only
C.
Antennas
D.
Detectors
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ANSWER :
A. Modulation techniques
15.
Satellite communication primarily uses:
A.
X-rays
B.
Gamma rays
C.
Microwaves and radio waves
D.
Ultraviolet rays
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ANSWER :
C. Microwaves and radio waves
16.
GPS (Global Positioning System) signals are transmitted using:
A.
Infrared waves
B.
X-rays
C.
Visible light
D.
Microwaves
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ANSWER :
D. Microwaves
17.
RFID (Radio Frequency Identification) tags work using:
A.
X-rays
B.
Radio waves
C.
Infrared waves
D.
Visible light
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ANSWER :
B. Radio waves
18.
Walkie-talkies use which type of EM waves?
A.
X-rays
B.
Radio waves (UHF/VHF)
C.
Infrared waves
D.
Microwaves only
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ANSWER :
B. Radio waves (UHF/VHF)