EASY
Earn 100

What is the relation between temperature and resistance of semiconductor?

Important Questions on Semiconductors

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Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids

The chromium ions doped in the ruby rod:

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Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
The scientific principle involved in 'Laser' is____
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Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids

State the conditions required to achieve laser action.

 

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Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
Define semiconductor. Explain different types of semiconductor.
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Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
The band gap in Ge and Si in eV respectively is
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Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
Draw separate energy band diagrams for conductors, semi-conductors and insulators and label each of them.
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Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
The bonding is germanium crystal (semiconductor) is
HARD
Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
What are logic gates? Write symbols and truth table for OR, AND, NOT and NAND gates.
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Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
Which of the energy band diagrams shown in the figure corresponds to that of a semiconductor?
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Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
The band gaps of an insulator, conductor and semiconductor are respectively Eg1, Eg2 and Eg3. The relationship between them is given as _____.
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Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
Define Super Conductivity.
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Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
Choose the correct statement. In conductors
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Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
What will be the effect of increasing the temperature on the conductivity of pure semiconductor?
EASY
Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids

State anyone difference between the energy band diagram of conductors and that of insulators.

MEDIUM
Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
What is NAND gate. Draw its symbol. Write truth table and draw its output single in wave form.
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Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
What is the value of energy gap for metals?
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Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
What is transducer?
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Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
Consider a situation in which reverse biased current of a particular P-N junction increases when it is exposed to a light of wavelength ≤621 nm. During this process, enhancement in carrier concentration takes place due to generation of hole-electron pairs. The value of band gap is nearly.
MEDIUM
Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
As the temperature increases, the electrical resistance
EASY
Physics>Modern Physics>Semiconductors>Electrical Conduction in Solids
A positive hole in a semiconductor is