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[> [ns] SHAT NO No. of Printed Pages : 2, Ens : hae SEAT NO., , , , " SARDAR PATEL UNIVERSITY- V V NAGAR, , DATE: 08-04-2019 BSe SEMESTER - IV EXAMINATION, MONDAY SUBJECT: PHYSICS PAPER CODE: USO4CPHYO1 TIME: 10:00 AM TO 1:00 PM, ELECTROMAGNETIC THEORY AND SPECTROSCOPY Total Marks ; 70, , INSTRUCTIONS: (i) The symbols have their usual meaning,, (ii) Figures to the right side indicate full marks,, , , , , , , , (01) The flux through any surface enclosing the charge is —, (a) €09? to) 2 (©) &4 “@ 2, (02) The field of a uniformly charged plane Is -—-——-------~ ft, (a) 2069 (b) 966 () ie ) oe, (03) Unit of electric potential is. --------------newton—meter ( coulomb newton-coulomd @) coulomb—meter, ( ) coulomb ) Renton meee ) mieter newton, , , , (04) The charge per unit time passing in a wire is called-------—----, , , {a) volt (b) current (c) power (d) resistarice, (05) The surface current density K = , (a) pv (b) GE (ce) ov (d) EV, (06) wave number energy equivalent tev = ---------------, (a) 8068 (b) 8866 (c) 6680 (d) 8966, (07) Atomic spectra are also known as ------------- spectra,, , {a) Band (b) Molecular (c) Line (d) continuous, {08) The total angular momentum quantum number is also known as ~--------- quantum number, , (a) subsidiary (b) inner (c) outer. (d) principal, (09) All ----+--2-= - sources do not show Auger electron track., , (a) electron (b) photo electron (c) neutron {d) proton, (10) X-radiations are ---------------- waves of definite wavelength., , (a) sound waves (b) electromagnetic waves (c) ultrasonic waves (d) none, , Q. 2 ° Give the answer of the following short questions.( any ten ) [20], (01) Derive Poisson’s equation and Laplace's equation, , (02) Write the equation for potentials in terms of Line(A) ,surface(o) and volume(p) charge, density. ., , (03) How much work will have to do to move a charge from point ‘a’ to point ‘b'?, , (04) How can a magnetic field lead to a force of attraction on a nearby parallel current?, {05) Write Ampere's Law in differential form and integral form., , (06) Give the comparison between magneto statics and electrostatics., , (07) State Wien’s displacement Law., , (08) Give differences between Luminescence and Incandescent., , (09) Explain space quantization., , (® cone)
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(10) Explain in brief about Auger eifect and Auger electron., (11) Compare x-rays with ordinary light., , (12) Which parts are required in the apparatus for the basic principle of generation of x-rays, demands? :, , Q.3 (a) Explain electric flux and derive Gauss’s Law in differential and integral form., (b) Expiain the curl of 2., OR, (a) Derive the expression for the energy of a point charge distribution., , (b) Using the expression for point charge distribution, obtain the expression for the energy of a, continuous charge distribution., , Q.4 (a) Obtain the relation V x B = j1oJ for straight line currents., (b) Derive volume current density and derive continuity equation V+ J = -%, OR, , (a) Give the explanation of a vector potential A in magneto statics., (b) Describe the motion of a particle in a cyclotron , and find momentum of a particle., , Q.5 (a) Discuss Zeeman effect with its experimental set up., , (b) Give classical interpretation of Normal Zeeman effect and derive formula of change in, frequency., , OR, (a) Describe stark effect with its experimental set up., (b) Write a note on L-S coupling., , Q.6 (a) Define x-rays and explain any one production method of x-rays and also write properties of, , , , x-Tays., OR, (a) State and explain Moseley's Law with application and write characteristics of Auger, electron., icsawacractaits snseastacesencnnnensnis eaten si eer, , , , , , (06}, {04}, , [06], [04], (08], , [04], , {06], [04], , {06}, , [04, , (08), [04], , {10], , (10)
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SARDAR PATEL UNIVERSITY, , SEAT No.______._ Fourth Semester B.Sc. EXAMINATION No. of Printed Pages : on, , (Under CBCS) 2010 Batch, Thursday, 11 April-2019, Time: 10:00 am to 01:00 pm, PHYSICS - USO4CPHY02, Classical Quantum & Nuclear Physics, , , , , , , , N.B: Figures on the right indicate maximum marks. Total Marks: 70, : Q.1 Answer the following MCQ by choosing correct option. (10), "1 The value of universal gravitational constant G is, (a) 4x 104 Nm2/Kg? (b) 6.67 x 10*!! Nm2/Kg?, (c) 6.67 x 10-11 Nm?/Kg? (d) 9.81 cm/cm?2, 2 The potential due to dipole is proportional to ___, {a} 1/r? (b) rv?, (c) rv (d) i/r, 3 For circular orbit, the value of eccentricity is___, fa) ed (b) 8-0, (C) s<t (d) e=1, 4 Theangular momentum is __ ina central force field., (a) Conserved (b) Zero, (C) Not conserved (d) Infinity, 5 The Non-normalized wave function must have ____ norm., (a) Finite (b) Infinite, (C) Zero (d) Complex, 6 The concept of matter wave was suggested by __., (a) Schrodinger (b) Laplace, (C) Heisenberg (d) de Broglie, 7 Any function with property of symmetry is said to have ___ parity., (a) infinite (b) zero, (c)_ even (a) odd, 8 inalpha-proton reaction____ particle is bombarded to radioactive nuclei., (a) alpha (b) Gamma, (C) Beta (d) proton, 9 is a neutral particle., (a) Electron (b) Proton, {C) Positron (d) Neutron, 10 Artificial radioactivity was discovered by ___ and ___, (a) Rutherford, Chadwick (b) Curie, Joliot, (c) Bohr, Pauli (ad) Aston, Dempster, , (1) PF.0.), , Page Lof2
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Q.2, , . Q3, , Q.3, , Q4, , Q4, , Q5, , Q5, , Q.6, , Q.6, , Q.7, , Q7, , Q8, , Q8, , Give short answers to the following questions. {Attempt any Six), , PADMS WHR, , (b), , (a), (b), , {a), , (b), , (a), (b), (a), (b), {a), (b), , (a), (b), (a), (b), (a), (b), (a), (b), (a), (b), , Write down properties of electric lines of force., What is equipotential surface?, , State Kepler's law of planetary motion,, , What is probability density?, , Define: Square well potential., , What are exothermic and endothermic processes?, Define: Stopping power., , What is central force field?, , Derive Gauss’ law for electrostatic field., , Using the equation of Gauss’ law, derive the equation for Laplace law,, OR, , Explain Newton’s law of gravitational force and Coulomb’s electrostatic force,, Deduce the expressions for gravitational fields and potentials., , Derive the equation of motion of equivalent one bedy problem and explain it, , with suitable example. ., OR, , Discuss the motion of a particle in a central force field and prove that the linear, , momentum and total energy remain conserved., , Discuss the stationary states and energy spectra of the quantum mechanical, system., Write a note on box normalization., , OR, Explain the concept of matter waves and discuss the experimental agreement of, electron., What is Heisenberg’s uncertainty principle? Explain it., , Derive time independent Schrodinger equation and explain its physical, significance,, Describe stationary states and energy spectra of the quantum mechanical, system., , OR, Explain the expectation values of the variable and prove the Ehrenfest’s, theorem., For a particle in a square well potential, draw the energy eigen function diagram., Discuss the alpha-neutron reaction with necessary equations., Explain the transmutation by deuterons., , OR, Derive the Q-value for nuclear reaction and deduce the expression for threshold, energy., Explain the transmutation by neutrons., , Discuss the method of measurement of range, ionization and stopping power, with proper diagram of the apparatus., Write a note on trans-uranium elements., , OR, Discuss the method of measurement of velocity and energy of alpha particle with, schematic diagram of deflection chamber., , Discuss about the discovery of artificial radioactivity., +O, , @, , (12), , [08], , [05], [03], [05], [03], [04], , [04], , [05], , [03], , Dara Daf?
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wate +, , SEAT No_____ No. of Printed Pages : 2, [24] Bag Sardar Patel University, [Ait] B.Sc.(Sem-4) Examination, , Monday, 9" Aprit, 2018, Subject; Physics, Course: USO4CPHY01, “ Title: Electromagnetic Theory and Spectroscopy, Time: 10:00 AM to 01:00 PM Total marks:70, , N.B.: (i) All the symbols have their usual meanings, (ii) Figures at the right side of the question indicate full marks, , Q-1, Multiple Choice Questions (Attempt All) (10), , (1) The SI unit of permittivity of free space (€,) is given by _, , , , , , (a) CN-m? (b) errs?, (c) C/N-m (a) Nem2/C2, (2) The curl of a gradient (V x B) is always, (a) 1 (b) zero, (c) -1 (d) infinite {3) The value of permeability of free space is given by NIA? ., (a) 4nx10°7 (b) 6x X 410°7, (c) 102x107 (d) xX 10°7, (4) One Tesla (T) is equal to one 5, (a) N/A-m (b) N/m, (c) Gauss (d) Joule /A, (5) For spherical symmetry, Gaussian surface is, (a) concentric (b) co-axial, (c} pill box (d} none of the above, {8) In CGS system; the unit of wavenumber in spectroscopy is, (a) cm* (b) mt, {c) km (d) having no unit, {7) In absorption spectra of Hydrogen, all the lines of series are observed., (a) Lyman (b) Balmer, (c) Paschen (d) Brackett, (8) The splitting of energy level of an atom when it is placed in an electric field is known as, (a) Stark Effect (b) Zeeman Effect, (c) Raman Effect (d) Rayleigh Effect, (9) nA = 2dsin@ is known as ., (a) Mosley law (b) Bragg's law, (c) Gauss law (d) Ampere’s law, (10) The x-ray spectra are attributed to the transition of electrons of an atom., (a) innermost {b) outermost, (c) surface (d) none of the above., , {P-1-09, (D =
