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Jeremy C. Zodinliana posted an Question
December 06, 2021 • 09:57 am 30 points
  • IIT JAM
  • Physics (PH)

S o1 the particles b) force on the particles al m c)positiorn ot the particles (d) their relative positions 2. if g represents the reduced mass of a system of t

S O1 the particles b) force on the particles al m c)positiorn ot the particles (d) their relative positions 2. If g represents the reduced mass of a system of two particles of masses mi nd m2 then, = c) d) None of the above 3. If Jbe the angular momentum of a planet of mass m, then according to Kepler's 2d law, the areal velocity ot the planet is given by 2J/m D) ZJm (c) J/2m d) J/m 4. Which of the following is an example of constrained motion? (a) Motion ot a train over a railway track (b) Motion of gas molecules inside a container c) Motion of a particle on the surface of a sphere (d) All of the above . Ifa system of N particles is subject to K independent constraints, then the number of degrees of freedom is given by K (c) 3NK (d) 3N K 6. A configuration space is a hypothetical space for a system of N particles, which in absence ot constraints 1s (a) N-dimensional b) 2N-dimensional (d) 6N-dimensiont 7. The density of the nucleus is of the order of 4/9 kg/ m3 b) 10 kg/ m3 c) 10 kg/m3 (d) 1019 kg/m3 8. The binding enerEy per nucleon ot the nucleus is maximum tor 26e ) 17 1) 92 9. Which among the following nuclei is least stable ? (a) a (b)1 C Ne20 (c) (d) 2Mg" 10. Tritium has a half- life of 12.5 years against Beta-Decay. What iraction of a sample of pure tritium will remain undecayed after 25 years? 4 o the sample (b)of the sample (c) of the sample d) of the sample 11. The mass of a helium nucleus (mHe) - 4.00287 amu, mass of a 0025 amu and mass o1 neutron tmn )* 1.00506 amu 4/9 o O e nucieus 1s neariy (a) 2.22 MeV (b) 14 (c) 01 MeV 5 MeV MeV (d) 28.1 12. A radioactive nucleus zX emits two alpha particles and two beta particles. he resulting nucleus is (a)z 9) z -14 - (d) z- 13. A carbon &C12 nucleus absorbs an energetic neutron and emits a -particle. The resulting nucleus is B ) N13 14. Consider the nuclear reaction: a + X Y+ b. The Q-value of the reaction +Eb)- (b) Q (Ey + Ea)-Eb (Ex Ea (d)Q- Eb - Ea 15. In nuclear shell model, it is assumed that the nucleons move independently in a common potential whicl is (a) parabolic (b) spherical ) hyperbolic d) none of these 5/9

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    Anshum Sharma Best Answer

    The correct answers are : 2.) a 3.) c 4.) d 5.) a 6.) c 7.) b 8.) c 9.) b 10.)c 11.)a 12.)a 13.)d 14.)c 15.)d

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