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IIT JAM 2005

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Brijmohan
Banaras Hindu University (BHU), Varanasi
PhD Condensed matter Physics

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fiziks Forum for CSIR-UGC JRF/NET, GATE, IIT-JAM, GRE in PHYSICAL SCIENCES IIT-JAM-2005(PHYSICS) IMPORTAN NOTE FOR CANDIDTES Attempt ALL 25 questions. Questions 1-15(objective questions) carry six marks each and questions 1625(subjective questions) carry twenty one marks each. Q.1 A solid sphere of mass m and radius a is rolling with a linear speed v on a flat surface without slipping. The magnitude of the angular momentum of the sphere on the surface is (a) 2 mav 5 (b) 7 mav 5 (c) mav (d) 3 mav 2 Q.2 The susceptibility of a diamagnetic material is (a) positive and proportional to temperature (b) negative and inversely proportional to temperature (c) negative and independent ofo temperature (d) positive and inversely proportional to temperature Q.3 The molar specific heat of a gas as given from the kinetic theory is 5 R. If it is not 2 specified whether it is CP or CV, one could conclude that the molecules of the gas (a) are definitely monatomic (b) are definitely rigid diatomic (c) are definitely non-rigid diatomic (d) can be monatomic or rigid diatomic Q.4 The value of entropy at absolute zero of temperature would be (a) zero for all the materials (b) finite for all the materials (c) zero for some materials and non-zero for others (d) unpredictable for any material fiziks c/o Anand Institute of mathematics, 28-B/6 Jia Sarai Near IIT, Hauz Khas, New Delhi, PIN- 110016 (INDIA) Phone: 011-32718565, +91-9871145498 Website: http://www.physicsbyfiziks.com Email: fiziks.physics@gmail.com 1

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