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Q. Explain the compositional defects.
Ans. Compositional Defect: This defect due to
(a) Alloying an element to original crystal.
(b) Impuring atom during original crystallization.
These defects are responsible for functioning of most semiconductor devices.
A substitutional impurity defect is also a point defect in which a foreign atoms that substitutes for a parent atom in the crystal lattice e.g. in bras, zinc is a substitutional atom in the copper.
A interstitial impurity is a small sized atom occupying space between the regularity positioned atoms.
what is value analysis
N-type (for example add Antimony) The are materials which have Pentavalent impurity atoms (Donors) added and conduct by the "electron" movement and are called as N-type Semi
According to this it is impossible to specify precisely and simultaneously two physical quantities those are canonically conjugate to each other and the product of the uncertainty
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represent the numbers 387 and 25 as floating numbers and illustrate the calculation of 387+25 using rounding.What is the calculated sum.
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Q. Discuss the classifications of plastics. OR Discuss the general properties and classification of plastics.
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