BT-201 (GS) – Engineering Physics
• Attempt any five questions.
• All questions carry equal marks.
a)Unit 1State and prove (Elementary proof) Heisenberg's uncertainty principle.
State and prove (Elementary proof) Heisenberg's uncertainty principle.
b)Unit 1Derive time dependent and time independent Schrodinger wave equation.
Derive time dependent and time independent Schrodinger wave equation.
a)Unit 2Explain the working principle of Mach-Zehnder Interferometer with suitable ray diagram.
Explain the working principle of Mach-Zehnder Interferometer with suitable ray diagram.
b)Unit 2Explain Rayleigh's criterion of resolution. Derive an expression for resolving power of a grating.
Explain Rayleigh's criterion of resolution. Derive an expression for resolving power of a grating.
a)Unit 3Draw and explain the V-I characteristic curve of P-N junction diode. Differentiate between Avalanche and Zener breakdown.
Draw and explain the V-I characteristic curve of P-N junction diode. Differentiate between Avalanche and Zener breakdown.
b)Unit 3Explain Kronig Penney model for periodic potential. Write down the Schrodinger equation and discuss conclusion of this model.
Explain Kronig Penney model for periodic potential. Write down the Schrodinger equation and discuss conclusion of this model.
a)Unit 4What is the working principle of an optical fibre? How light propagates through it? Define terms: Numerical aperture, Population inversion, V-number.
What is the working principle of an optical fibre? How light propagates through it? Define terms: Numerical aperture, Population inversion, V-number.
b)Unit 4Explain construction and working of CO₂ laser with suitable energy level diagram.
Explain construction and working of CO₂ laser with suitable energy level diagram.
Unit 3/2Write short note on any two: a) Zener diode b) Newton's ring c) Intrinsic and Extrinsic semiconductor through Fermi level d) Solar cell
Write short note on any two: a) Zener diode b) Newton's ring c) Intrinsic and Extrinsic semiconductor through Fermi level d) Solar cell
a)Unit 5State and prove equation of continuity. Explain its significance.
State and prove equation of continuity. Explain its significance.
b)Unit 5Define the electric field intensity. Find out the expression for electric intensity due to infinite line charge.
Define the electric field intensity. Find out the expression for electric intensity due to infinite line charge.
a)Unit 3Explain Hall effect. Derive expression for Hall coefficient and Hall angle.
Explain Hall effect. Derive expression for Hall coefficient and Hall angle.
b)Unit 1Define wave function and state its properties. Derive energy and momentum operator.
Define wave function and state its properties. Derive energy and momentum operator.
a)Unit 2What is interference of light? Describe young's experiment and derive expression of fringe width.
What is interference of light? Describe young's experiment and derive expression of fringe width.
b)Unit 4Write down the difference between spontaneous and stimulated emission. Write down the applications of laser.
Write down the difference between spontaneous and stimulated emission. Write down the applications of laser.