BT-201 (GS) – Engineering Physics

B.Tech. I & II Semester
Examination, June 2025
Grading System (GS)
Max Marks: 70 | Time: 3 Hours

Note:
i) Attempt any five questions.
ii) All questions carry equal marks.

Previous Year Questions

Q.1 a) Derive time dependent and time independent Schrodinger wave equation.
b) Discuss the physical significance of wave function.

Answer of (a): To be posted here!


Answer of (b): To be posted here!

Q.2 a) Describe the construction and working of Mach-Zelinder interferometer.
b) What is superposition of wave and interference of light by amplitude splitting?

Answer of (a): To be posted here!


Answer of (b): To be posted here!

Q.3 a) Explain the Numerical aperture and acceptance angle of Optical Fiber.
b) Explain the construction and working of Ruby laser with neat diagram.

Answer of (a): To be posted here!


Answer of (b): To be posted here!

Q.4 a) Explain Maxwell's equations in vacuum.
b) Write a note on different types of polarization in dielectric materials.

Answer of (a): To be posted here!


Answer of (b): To be posted here!

Q.5 a) Starting from the principle of charge conservation, derive the continuity equation for current densities in a conducting medium.
b) What are the Einstein coefficients? Derive the relationship between Einstein coefficients A and B.

Answer of (a): To be posted here!


Answer of (b): To be posted here!

Q.6 a) What is the importance of Rayleigh criteria? Explain Rayleigh criterion for limit of resolution.
b) Explain Construction and working of CO₂ LASER with suitable energy level diagram.

Answer of (a): To be posted here!


Answer of (b): To be posted here!

Q.7 a) What is Zener diode? Discuss its V-I Characteristics.
b) Explain in detail the working of Michelson's interferometer.

Answer of (a): To be posted here!


Answer of (b): To be posted here!

Q.8 Write short notes on the following:
a) Solar cell
b) Hall effect
c) Bloch's theorem

Answer: To be posted here!