Which one of the following material is most suitable for making core of an electromagnet ?

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1. Which one is the best material for making connecting wires ?

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2. A certain stress applied to an elastic material produces a certain strain in it. If the elastic limit is not exceeded the energy gained per unit volume of the material is given by_________________?

   A. Stress/strain B. (stress/strain) C. Stress x strain D. (Stress / strain)...

3. In multimode step index fibre the refractive index of core and cladding is____________?

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4. The core of a transformer is laminated to reduce energy losses due to__________?

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5. Which of the following radiations are suitable for the treatment of an infection in the interior of the body ?

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6. Which one of the following materials is useful for making bulb filaments ?

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7. If a vector Ā is making an angle “∅” with positive y-axis then which of the following is correct.?

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8. Geiger counter is suitable for _________________?

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9. The most suitable unit for expressing nuclear radius is_______?

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10. Which instrument is suitable to measure the internal diameter of a test tube?

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