BSc CSIT (TU) Science Physics (BSc CSIT, PHY113) Question Paper 2081
This is the official BSc CSIT (TU) (Science stream) Physics (BSc CSIT, PHY113) question paper for 2081, as set in the regular annual examination. It carries 60 full marks and a time allowance of 180 minutes, across 12 questions. On Kekkei you can attempt this Physics (BSc CSIT, PHY113) past paper online with a timer, get instant AI feedback and step-by-step solutions, and track the topics where you lose marks — completely free. Whether you are revising for your BSc CSIT (TU) Physics (BSc CSIT, PHY113) exam or solving previous years' question papers, this 2081 paper is a great way to practise under real exam conditions.
Section A: Long Answer Questions
Attempt any TWO questions.
What is interference of light? Describe Young's double-slit experiment and derive the expression for fringe width. How does fringe width change with the medium?
State Gauss's law and apply it to determine the electric field due to a uniformly charged infinite plane sheet and between two parallel charged plates.
Explain the principle of laser action. Describe the construction and working of a semiconductor laser with a neat diagram.
Section B: Short Answer Questions
Attempt any EIGHT questions.
Distinguish between Fresnel and Fraunhofer diffraction.
Derive the capacitance of a parallel plate capacitor with a dielectric slab inserted between the plates.
State Faraday's and Lenz's laws of electromagnetic induction.
Define acceptance angle and numerical aperture of an optical fiber.
Define simple harmonic motion and give two examples.
State Coulomb's law and write it in vector form.
Explain Fraunhofer diffraction at a single slit.
Distinguish between single-mode and multi-mode optical fibers.
Write short notes on the properties of laser light.