Iron Shielding | 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 protection against the effect of external magnetic fields
    • B. For guarding the instruments against unauthorized handing
    • C. None of these
    • D. For protection against the effect of moisture in the air
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