K.S ACADEMY,SALEM. TNSET- 2017

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1 PG TRB & TNSET COACHING CENTRE FOR PHYSICS TNSET PHYSICS PAPER-3 MODEL QUESTION PAPER (1) TIME: HOUR Marks: 30 General Instruction to Candidates : At the commencement of examination, the question booklet will be given to you. In the first 5 minutes, you are requested to open the booklet and compulsorily examine it as below : To have access to the Question Booklet, tear off the paper seal on the edge of this cover page. Do not accept a booklet without sticker-seal and do not accept an open booklet. Rough Work is to be done in the end of this booklet. Answers are to be marked on the OMR answer sheet Use only Blue/Black Ball point pen to shade the answer. Hand over the OMR answer sheet at the end of the examination to the Invigilator. This book contains 7 pages Use of any calculator or log table etc., is prohibited. 1. Differential equation for planetary motion given as a) b) c) d) Cell: Page 1

2 2. Bose Einstein condensation pressure varies with temperature as (TNSET-2016) a) T b) c) d) 3. In an irreversible process with remaining constant which of the following attains minimum under equilibrium? [TNSET 2012] a) Gibbs free energy b) Helmholtz free energy c) entropy d) chemical potential 4. The value of the residue of is A) B) C) D) - 5. Error in the Trapezoidal formula of the order of (A) (B) (C) (D) 6. and represent a symmetric and an antisymmetric real valued tensor respectively, in six dimensions. The number of independent components of are and A) 20 and 16 respectively Cell: Page 2

3 B) 21 and 15 respectively C) 18 and 18 respectively D) 30 and 6 respectively 7. Consider an anti-symmetric tensor with indices i and j running from 1 to 5. The number of independent components of the tensor is (a) 3 (b) 10 (c) 9 (d) 6 8.Which of the following statements is TRUE for the function (a) f(z) is analytic everywhere in the complex plan (b) f(z) has a zero at (c) f(z) has a pole of order 2 at (d) f(z) has a simple pole at 9.Which of the following numerical methods is used to find root of a function? (A) Runge-Kutta method (B) Simpson's rule (C) Newton-Raphson method (D) Trapezoidal rule 10.The number of independent real parameters characterizing the group SU(2) are (A) One (C) Three (B) Two (D) Four 11.A generalized force F acts on a system of particles. Then A) F will always have the dimensions of a force. Cell: Page 3

4 B) F can sometimes have the dimensions of a force. C) F will never have the dimensions of a force. K.S ACADEMY,SALEM. TNSET D) Fdq will sometimes have dimensions of energy, where q is the generalized coordinate 12.Which of the following transformations is not canonical? A) and with B) C) D) 13.The Hamilton-Jacobi equation is expressed as where H is the Hamiltonian and S is the Hamilton's principal function. Then, if L is the Lagrangian, S satisfies A) B) C) D) 14.The skin depth in a copper conductor at 10 GHz is µ m. Its value at 1 MHz will be A) B) C) D) 15. For the dominant mode, in a rectangular waveguide with length 20cm and breadth 10cm, the guide wavelength for a signal of 2.5GHz will be about : (A) (B) Cell: Page 4

5 (C) (D) 16. In Bose Einstein Condensation, large number of bosons are accumulated in the quantum state of : (A) (B) (C) (D) 17. The classical partition function Z gives : (A) Sum of states of the system (B) Sum of momentum of the system (C) Sum of energy of the system (D) Sum of both energy and state of the system 18.A transmission line whose characteristic impedance a pure resistance (A) Must be a lossless line (B) Must be a distortion-less line (C) May be a lossless line (D) May not a distortion-less line 19. A 12 bit ADC is used to digitize analog signals of amplitudes lying in the range from 0 V to +10 V. What digital output will an analog input of V correspond to? A) B) Cell: Page 5

6 C) D) The Bravais lattice for is A) Base centred cubic B) Body centred cubic C) Primitive cubic D) Face centred cubic 21.Paschen-Back effect is due to (A) Spin of the electron (B) Only orbital motion of the electron (C) Spin-orbit interaction (D) Spin of the nucleus 22.CPT theorem is also known as A) Luders-Pauli theorem B) Briet-Wigner theorem C) Optical theorem D) Gellmann theorem 23.It is difficult to determine the Hall coefficient for a metal as compared to a semiconductor because, the (A) (B) (C) (D) Hall coefficient will be too small Hall voltage will be very high Hall effect will not be exhibited in a metal Lorentz force will not act on free electrons Cell: Page 6

7 24. Which special functions are part of the radial component of the hydrogenic wave function? A) Associated Legendre functions B) Associated Laguerre functions C) Hermite polynomials D) Spherical Bessel functions 25.To detect trace amounts of gaseous species in a mixture of gases, the preferred probing tool is (a) Ionization spectroscopy with X-rays (b) NMR spectroscopy (c) ESR spectroscopy (d) Laser spectroscopy 26.A collection of N atoms is exposed to a strong resonant electromagnetic radiation with Ng atoms in the ground state and Ne atoms in the excited state, such that This collection of two-level atoms will have the following population distribution: (a) (b) (c) (d) 27.The number of spectral lines allowed in the spectrum for the 3 2 D 3 2 P transition in sodium is (a) 4 (b) 28 (c) 12 (d) 6 Cell: Page 7

8 28. The phase velocity of waves propagation in hollow metal waveguide is (a) Greater than velocity of light in free space (b) Less than velocity of light in free space (c) Equal to velocity of light in free space (d) Equal to group velocity 30.In Rutherford scattering cross-section, the differential scattering cross-section is inversely proportional to a) b) c) d) ******************************************************************** K.S ACADEMY PG TRB & TNSET (SUBJECT: PHYSICS) Near NGGO colony, Thathampatty(po) Salem PG-TRB & TNSET - MATERIAL,QUESTION BANK & MODEL QUESTION PAPERS ARE AVAILABLE Contact Cell No : Cell: Page 8

Test Booklet Code & Serial No. A PHYSICAL SCIENCE

Test Booklet Code & Serial No. A Signature and Name of Invigilator. (Signature)... (Name)... 2. (Signature)... (Name)... JAN - 228 PHYSICAL SCIENCE Seat No. (In figures as in Admit Card) Seat No.... (In