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IIT JAM 2009

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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-2009(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 Isothermal compressibility T of a substance is defined as T 1 V . Its value V P T for n moles of an ideal gas will be (a) 1 P (b) n P (c) 1 P (d) n P Q.2 A space crew has a life support system that can last only for 1000 hours. What minimum speed would be required for safe travel of the crew between two space stations separated by a fixed distance of 1.08 x 1012 km? (a) c (b) 3 c (c) 2 c 2 (d) c 5 Q.3 An oscillating voltage V(t) = V0 cos t is applied across a parallel plate capacitor having a plate separation d. The displacement current density through the capacitor is V t V0 cos t d (a) 0 V0 cos t d (c) 0 0 V0 cos t d (b) 0 0 V0 cos t d (d) 0 V0 sin t d 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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