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12th ICSE
IMPORTANT
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What are energy bands in solids?

Important Questions on Semiconductor Electronics

HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 18 - Semiconductor Electronics>QUESTIONS>Q 2
Distinguish between energy levels and energy bands.
HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 18 - Semiconductor Electronics>QUESTIONS>Q 3

Draw energy band diagrams for metals, insulators and semiconductors.

HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 18 - Semiconductor Electronics>QUESTIONS>Q 4
Explain the terms intrinsic and extrinsic conductivity.
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 18 - Semiconductor Electronics>QUESTIONS>Q 5

What is the difference between electron current and hole current?

HARD
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 18 - Semiconductor Electronics>QUESTIONS>Q 6
What are the characteristic properties of an intrinsic semiconductor?
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 18 - Semiconductor Electronics>QUESTIONS>Q 7
How does the resistance of metallic conductors change with temperature?
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 18 - Semiconductor Electronics>QUESTIONS>Q 8

Explain, why the electrical conductivity of a pure semiconductor increases on heating.

MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 18 - Semiconductor Electronics>QUESTIONS>Q 9
Explain the effect of temperature-variation on the resistivity of pure semiconductors.