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प्रश्न
Define free electrons.
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उत्तर
Electrons in outer orbits are weakly bound with the nucleus. In solids these weakly bound electrons leave their individual atom and become a part of it. These electrons are known as free electrons.
संबंधित प्रश्न
Name the unit in which the work function of a metal is expressed.
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Name two radioactive substances.
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State two characteristics of the substance used as thermionic emitter.
How is a cathode ray beam affected while passing through an electric field?
What is meant by Radioactivity?
From α, β and γ-rays, name the one which is not affected by electric or magnetic field?
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State the principle on which the functioning of a nuclear reactor is based.
