SSC General Science & Technology Sample Paper NCERT Sample Paper-4

  • question_answer
    Match List- I (Frequency band) with List- II (Frequency range) and select the correct answer using the codes given below the lists
    List- I List- II
    A. Low- Frequency 1. 3 GHz to 30 GHz
    B. High- Frequency 2. 3 MHz to 30 MHz
    C. Super High Frequency 3. 300 kHz to 3 MHz
    D. Medium- Frequency 4. 30 kHz to 300 kHz

    A)  A\[\to \]2, B\[\to \]4, C\[\to \]3, D\[\to \]1

    B)  A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1

    C)  A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3

    D)  A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]3

    Correct Answer: D

    Solution :

    [d] Frequency band designation Given in the order of Frequency band> Designation > Typical service   3-30 kHz > Very low frequency (VLF) > Navigation, sonar   30-300 kHz > Low frequency (LF) > Radio beacons, navigational aids 300-3,000 kHz > Medium frequency (MF) > AM broadcasting, marintime radio, Coast Guard communication, direction finding 3-30 MHz > High frequency (HF) >Telephone, telegraph, and facsimile; shortwave international broadcasting; amature radio; citizen's band; ship-to-coast and ship-to- aircraft communication 30-300MHz > Very high frequency (VHF) > Television, FM broadcast, air-traffic control, police, taxicab mobil radio, navigational aids 300-3,000MHz > Ultrahigh frequency (UHF)> Television, satellite communication, radiosonde, surveillance radar, navigational aids 3-30 GHz > Superhigh frequency (SHF) > Airborne radar, microwave links, common- carrier land mobile communication, satellite communication 30-300 GHz > Extreme high frequency (EHF) > Radar, experimental

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