Magnetic Field Protection | MCQs

    Q1: Why shields made of iron usually provided around precision instruments?

    عام طور پر صحت سے متعلق آلات کے آس پاس فراہم کردہ لوہے سے بنی ڈھالیں کیوں؟
    • A. For guarding the instruments against unauthorized handing
    • B. For protection against the effect of external magnetic fields
    • C. For protection against the effect of moisture in the air
    • D. None of these
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