1. X-rays are produced by bombarding a metal target with high-speed electrons. They belong to the electromagnetic spectrum with frequencies ranging from 30 PHz to 30 EHz and are used in medical imaging and material analysis. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/phRead more

    X-rays are produced by bombarding a metal target with high-speed electrons. They belong to the electromagnetic spectrum with frequencies ranging from 30 PHz to 30 EHz and are used in medical imaging and material analysis.

    For more visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-8/

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  2. (i) Microwaves are suitable for radar systems used in aircraft navigation, with frequencies ranging from 1 GHz to 300 GHz. (ii) Gamma rays are used for treating cancer tumors, with frequencies above 30 EHz. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-8Read more

    (i) Microwaves are suitable for radar systems used in aircraft navigation, with frequencies ranging from 1 GHz to 300 GHz.
    (ii) Gamma rays are used for treating cancer tumors, with frequencies above 30 EHz.

    For more visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-8/

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  3. Microwaves are suitable for radar systems in aircraft navigation due to their short wavelength, allowing precise detection of objects, high penetration through clouds and fog, and efficient reflection from metallic surfaces for accurate location and distance measurement. For more visit here: https:/Read more

    Microwaves are suitable for radar systems in aircraft navigation due to their short wavelength, allowing precise detection of objects, high penetration through clouds and fog, and efficient reflection from metallic surfaces for accurate location and distance measurement.

    For more visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-8/

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  4. (i) A wave with a frequency of 3 × 10¹⁹ Hz belongs to the X-ray region of the electromagnetic spectrum. (ii) A wave with 5 × 10¹¹ Hz frequency belongs to the microwave region. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-8/

    (i) A wave with a frequency of 3 × 10¹⁹ Hz belongs to the X-ray region of the electromagnetic spectrum.
    (ii) A wave with 5 × 10¹¹ Hz frequency belongs to the microwave region.

    For more visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-8/

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  5. The orientation of a portable radio is important because the radio's antenna needs to align with the electromagnetic waves from the broadcasting station. Proper alignment ensures maximum signal reception and reduces interference, improving sound clarity. For more visit here: https://www.tiwariacademRead more

    The orientation of a portable radio is important because the radio’s antenna needs to align with the electromagnetic waves from the broadcasting station. Proper alignment ensures maximum signal reception and reduces interference, improving sound clarity.

    For more visit here:
    https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-8/

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