(a) Differentiate between n-type and p-type semiconductors. Derive an…
Previous year question for Advanced Engineering Physics.
Question
(a) Differentiate between n-type and p-type semiconductors. Derive an expression for the electron concentration in an intrinsic semiconductor and hence explain the concept of fermi level for an intrinsic semiconductor. (12)
(b) Newton's rings are observed in reflected light of wavelength $5.9 \times 10^{-7} \text{ m}$. The diameter of $10^{\text{th}}$ dark ring is $0.5 \text{ cm}$. Find the radius of curvature of the lens and thickness of the air film. (8)
- Year: 2022
- Subject: Advanced Engineering Physics