EASY
Earn 100
In any conductor-
(i) All the free electrons are on the surface
(ii) All the positive ions are at the surface
(iii) All the excess charge and the free electrons in the conductor is at the surface of conductor
(iv) All the excess charge and the positive ions are at the surface
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Important Questions on Electrostatic Potential and Capacitance
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A semiconductor with equal concentration of acceptor and donor type impurities is termed as
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The bonding is germanium crystal (semiconductor) is
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When will the conductivity of a Ge semiconductor decrease?
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Which of the energy band diagrams shown in the figure corresponds to that of a semiconductor?
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The band gaps of an insulator, semiconductor and conductor are respectively .The relationship between them can be given as:
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The chromium ions doped in the ruby rod:
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The resistivity of a semiconductor at room temperature is in between
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The band gaps of an insulator, conductor and semiconductor are respectively and The relationship between them is given as _____.
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Consider a situation in which reverse biased current of a particular junction increases when it is exposed to a light of wavelength During this process, enhancement in carrier concentration takes place due to generation of hole-electron pairs. The value of band gap is nearly.
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Arrange the following in order of increasing band gap
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Choose the correct statement. In conductors
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The Forbidden gap between conduction band & valance band is maximum for ______
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Choose the correct option :
Electrical conductivity of a semiconductor-
MEDIUM
As the temperature increases, the electrical resistance
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State the conditions required to achieve laser action.
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The forbidden energy gap for crystal at is
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The scientific principle involved in 'Laser' is____
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The band gap in and in respectively is
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A positive hole in a semiconductor is
