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- Physics - Phy
- 2017
- PYQ
**Biju Patnaik University of Technology Rourkela Odisha - BPUT**- Civil Engineering
- B.Tech
**1907 Views**- 42 Offline Downloads
- Uploaded 1 year ago

Registration No: Total Number of Pages: 02 B.Tech BS1102 1ST SEMESTER BACK EXAMINATION 2017-18 PHYSICS-I BRANCH: AEIE, AERO, AUTO, BIOTECH, CHEM, CIVIL, CSE, ECE, EEE, EIE, ELECTRICAL, ETC, FASHION, IEE, IT, MECH, METTA, MME, PE, TEXTILE Max Marks: 70 Time: 3 Hours QCODE: B934 Answer Question No.1 which is compulsory and any five from the rest. The figures in the right hand margin indicate marks. Q.1 Answer the following questions: [2 x 10] a) What are free and forced oscillations? b) What is the principle of superposition? c) What is the Interference? Write the types of Interference. d) Define grating element of a diffraction grating. e) What is a quarter wave plate? f) State Maxwell’s equations in a medium having no charge and no current. g) What is Lorentz gauge condition? h) What is pair production? i) State Wien’s displacement law. j) What is meant by Quantum mechanical tunneling? Q.2 a) Set up the differential equation of a forced oscillator subjected to an external [5] force. b) Mention the similarities and difference between a converging lens and a zone [5] plate. Q.3 a) What are Fresnel’s half period zones? b) Explain the factors on which the intensity at a point due to Fresnel’s half period [3] [7] zones depend? Q.4 a) What in meant by polarization of light. How polarization is produced by [5] reflection. b) State Brewster’s law. Q.5 a) Prove that the curl of gradient of a scalar field is zero and divergence of curl of [5] [5] a vector field is zero. b) Show that the electromagnetic waves are transvers in nature. [5]

Q.6 a) Derive the time independent Schrodinger’s equation for one dimensional system. b) Hence find out the energy of a free particle? Q.7 a) What is a one-dimensional potential step? b) Derive the Schrödinger equation for a particle in a potential box of infinite depth. Q.8 Write short answer on any two: a) Coupled oscillation. b) Zone plate. c) Poynting theorem. d) Compton shift. [6] [4] [2] [8] [5 x 2]

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