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CSIR UGC NET, 2011 December 18, Question Paper, Download, Key, Answers, solutions, Explanations, Comment Here

► CSIR UGC NET, 2011 December 18, Question Paper, Download, Key, Answers, solutions, Explanations, Comment Here

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UGC CSIR NET 2011 December 18 Answer Key Comment here with explanation
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58 comments :

  1. CHANDRA PRAKASH VERMA........
    CSIR NET PHYSICAL SCIENCE
    booklet co. A
    Qu.1.2
    2.4
    3.2
    4.
    5.2
    6.3
    7.
    8.
    9.
    10.
    11.2
    12.4
    13.4
    14.1
    15.
    16.3
    17
    18.4
    19
    20
    21
    22
    23.3
    24
    25.3
    26
    27.4
    28.1
    29.1
    30.
    31.1
    32
    33
    34.3
    35.2
    36.4
    37.1
    38.
    39.2
    40.3
    41
    42
    43.2
    44.2
    45
    46.2
    47.4
    48.4
    49.
    50.2
    51.1
    52
    53
    54.1
    55
    56
    57.4
    58.2
    59.4
    60.2
    61.1
    62.3
    63
    64.4
    65
    66
    67.2
    68.1
    69.
    70.1
    71.3
    72.3
    73.
    74.4
    75.

    ReplyDelete
  2. Booklet Code A...
    Q No: 7
    answer is 1. Bcoz Dune sand has 100% cumulative for narrow size.

    ReplyDelete
  3. Q No: 34
    answer is 2.
    Reason take reduced mass of positron and electron, Mass=m/2

    ReplyDelete
  4. Q No: 28
    Answer is 2.
    refere any classical mechanics book.

    ReplyDelete
  5. Q No: 14
    Answer may be 2..
    just check it.

    ReplyDelete
  6. Please give me reasons for ur key.( at least for part-B and part-C)
    Thank u.

    ReplyDelete
  7. thank you very much sir

    ReplyDelete
  8. booklet code B?
    any answers!

    ReplyDelete
  9. Mr Chandra is this relayable or u just show what u have attemp. I want to know as I also got Booklet A.

    ReplyDelete
  10. please upload thequestion paper also. then it will be useful to all sets

    ReplyDelete
  11. can anyone post Chemical sciences answers

    ReplyDelete
  12. post booklet A so that we can compare answers with our booklets

    ReplyDelete
  13. question no 43 correct ans is (1) because there is no feedback fron -ve arm so no voltage drop. so the voltage at point A will be same as the input to -ve arm


    Question no 28 correct ans is (2)

    Question no 31 correct ans is either (3)or (4) plese refer to polarizer puzzle


    the above all questions are for booklet code A

    ReplyDelete
  14. Somebody give ans for c series
    giving qns
    part A

    1. oxidation of alcohol
    2. sun blackhole ans: 4. no plns
    3. animal mod legs ans 4. butterfly
    4. droplets of herbicide
    5.min no of cards ans: 4. 5
    6. two bladed fan and s bullet
    7. jar cont iron blk ans: 3. rem same
    8. room wind prev heat
    9.poly peptide 300 amino acids
    10. bubbling air thr water ans: 2. co2
    11. disruption of air trafic ans : 1. engine damage
    12. segment of circle ans: 2 85deg
    13. 3 boys kicked balls
    14. swinging door
    15. most abundant ele in human body
    16. fig sedement size
    17. no sys 0,2,3,4,5 ans: 3. 11
    18. absolute water cont equitorial rgn
    19 detergent mole ans: 3.
    20 parents blood groups ans: 4. o and B

    ReplyDelete
  15. Ugc net physics series c dec 2011
    give ans key
    qns
    part B
    21. Legendre polinomials
    22. op amp voltage
    23. potential of diatomic molecule
    24. particle in one dim potential v(x)= v(-x)
    25. point particle of mass m carry ele chrge q
    26. double pendulam
    27. 4 equal point charges
    28. youngs double slit interference expt
    29. flip flop
    30. force F appld to particle of mass m
    31. maxwellian distributio of velocity
    32. battery powers two ckts
    33. two particles of identical mass move circular orbit
    34. internal energy e of a sys
    35. system of N noninteracting spin particles
    36. perturbation H'=bx4
    37 three polarizers p1,p2,p3
    38 no density of free e gas
    39 pin 0,1,2,3,4 of microprocessor
    40. unbiased dice is trown
    41. Energy of first excited quantum
    42. eqn of plane xyz= 8
    43. static charge distribution
    44. 3* 3 matrix ans: 3. -1,3,4
    45. GS Enegry of H atom -13.6ev

    ReplyDelete
  16. can anybody tell me keys of set c

    ReplyDelete
  17. Q.No.38
    Answer is 2
    E=TdS-PdV
    so T=diff(E) w.r.t S

    ReplyDelete
  18. @cp verma lucknow
    Everything CP Verman has given is wrong. He is misleading. DO not believe in those answers

    ReplyDelete
  19. Give answers to part C physics
    46. voltage regulator zener diode
    47. wavw functuion t=0 given orthogonal?
    48. energy levels of es of mass m and charge e
    49 a planet of mass m moves.. tot enrgy of planet?
    50. shell model spin parity
    ans : 4. 7/2 +, 7/2+
    51. let x1(t) and x2(t) be two independend solns
    52. gas molecules of mass m confined in cylinder
    53. the excitations of a 3d solid are bosonic in nature
    54. ratio of intensities D1 and D2 sodium
    55. trajectory on the zpz-plane
    56. difference of coulomb energy mirror nuclei
    57. heater AND Thermocouple
    58. solenoid of radius R with n turns
    59. terms in taylor series
    60. atom of mass M excited
    61. a gas of N non interacting particles
    62. onstant perturbation fig
    63. free energy of a magnetic system
    64. particle of mass m moves inside a bowl
    65. the graph of the function f(x)= 1,0 LAPLACE transform
    66. one dimensional chain consists N rods each length a
    67. annulus of mass M inner and outer radii a,b
    68. monochromatic light of wavelength 660nm
    69. electron of energy 27 GeV collides proton
    70. const elec current I infinit long wire
    71. laser opeating 500 nm
    72. valule of real integral
    73. min energy of an e CERENKOV radiation
    74. hyperfine interaction in an atom is given by H= aSe.Sp
    75. Let |0> and |1> noprmalised eigen values

    ReplyDelete
  20. question 38 ans is 2
    E=Tds-Pdv and if E is independent of T means there is no volume change. so dv=0. so final equation becomes E=Tds. now you can do

    ReplyDelete
  21. flip-flops...ans: (2) 0001

    ReplyDelete
  22. BATTERY POWERS TWO CKT, ERROR IN THE ESTIMATE OF I..ANS: (3) 5.0 mA

    ReplyDelete
  23. Q. 28- Answer 3 is correct.......

    Booklet code A

    ReplyDelete
  24. Booklet Code A

    1> 2
    2> 4
    3> 1
    4> 3
    5> 2
    7> 2
    9> 3
    12> 4
    14> 3
    15> 3
    17> 3
    18> 4
    20> 2
    21> 2
    22> 2
    23> 3
    24> 2
    25> 1
    27> 4
    28> 3
    30> 3
    33> 1
    37> 2
    39> 1
    40> 3
    41> 3
    42> 1
    44> 2
    48> 3
    50> 2
    53> 3
    56> 3
    58> 2
    59> 2
    60> 3
    62> 2
    63> 3
    65> 3
    68> 2
    70> 3
    71> 3
    72> 4
    74> 2
    75> 4

    ReplyDelete
  25. ans 2 booklet code B
    SEC B
    Q21-POLARIZERS,ANS-3
    Q22-DOUBLE PENDULUM,ANS-2
    Q24-POINT PARTICLE,ANS-1
    Q25-SPEED OF RELATIVISTIC PARTICLE,ANS-4
    Q26-DIATOMIC MOLECULE,ANS-4
    Q28-STATIC CHARGE,ANS-3
    Q30-YDSE,ANS-4
    Q32-UNBAISED DIE,ANS-2
    Q33-LEGENDRE POLY,ANS-4

    ReplyDelete
  26. Raghvendra Pandey23 December, 2011

    CSIR–NET(Dec. 2011)Answer key for Set B
    1. a 23.d 45.a 67.b*
    2.c 24.a 46.d 68.d
    3.b 25.a* 47.b* 69.b*
    4.b 26.d 48.c* 70.b
    5.a 27.c 49.b 71.c
    6.d 28.c 50.c 72.b*
    7.d 29.b 51.c 73.b
    8.c 30.d 52.a 74.d
    9.c 31.a* 53.c 75.d*
    10.a 32.d 54.a*
    11.d 33.d 55.d
    12.b 34.b 56.d
    13.d 35.a 57.c*
    14.c 36.b 58.b*
    15.d 37.a 59.a
    16.a 38.b 60.d
    17.c 39.a 61.b
    18.c 40.c* 62.a
    19.d 41.b 63.b
    20.a 42.a 64.c
    21.a 43.c 65.a*
    22.b 44.a 66.c*
    *may be vary …

    ReplyDelete
  27. Raghvendra Pandey23 December, 2011

    13.b(Alluminium foil) will be correct answer.

    ReplyDelete
  28. Raghvendra Pandey23 December, 2011

    13.b(Alluminium foil) will be correct answer.

    ReplyDelete
  29. raghvendra pandey sir......
    are the above answers are correct?

    ReplyDelete
  30. cp verma .
    sorry MR.Anonymous i accept some ans's i posted is wrong. and how can u say everything is wrong.and i am misleading u???
    i am really very to post on your site.

    ReplyDelete
  31. sodiun D2/D1 ratio lies between 1.2 and 1.8. so i think ratio of inensities are 2/3.

    ReplyDelete
  32. M@H@BOOB.KP
    BOOLET CODE B
    PART A
    1.most abundant elemt=oxygn
    2.numbr systm, decimal equivalent =11
    3.segment of circle,angle are equal=85
    11.animal without modified leg=butterfly
    14.jar containing an iron block put into water=level fall
    15.sun becomes black hole =none of planets
    18.droplets of herbicide solution on leaf=B>C>A
    20.cylinder with 4 blades and bullet=missing blade reduced by 1/4

    ReplyDelete
  33. Pandey G ye aap ka answer hai ya you have try to solve this.
    Please suggest the answer of g.s. for water level to be remains same.Please suggest

    ReplyDelete
  34. Please any one tell me what is the cut off for physical science??

    ReplyDelete
  35. answer for spin question is 7/2+ and 7/2+

    ReplyDelete
  36. Raghavendra sir, please explain your answer for Qno. 13

    ReplyDelete
  37. Qno.2 in set-A or Qno.6 in set-B may have the ans.1
    becoz this is the horizontal case and will follow the relation time=distance/velocity.
    if it is in the case of vertical case, option 4 will be the correct answer.

    ReplyDelete
  38. for set-B,
    2---ans.3
    8----ans.1
    9----ans.3
    10---ans.1(narrow size distribution as seen from the given fig)
    12---ans.2(157th position mutated to the end codon. so polypeptide chain will contain 156 AA)
    14----ans.3
    15---ans.4
    16---ans.1
    17---ans.3
    19---ans.4

    ReplyDelete
  39. ans for c-set csir 2011 dec physics paper
    1)2 2)1 3)4 4)2 5) 6)4 7)2 8)3 9) 10)2 11)1 12)2 13)1 14)1 15)1 16)1 18)1 19)3 20)4
    part-B:
    21)4 22)2 23)4 24)2* 25)1 26)2 27)1 28)3 29)2 30)4 31)3 32)1 33)1 34)2 35)4* 36)1 37)4 38)1 39) 40) 41)4 42) 43)3* 44)3 45) 46)2 47)3* 48)2* 49)1 50)4 51)3* 52)2 53)4 54)4 55)2 56)2 57)1* 58) 59)2 60)2 61)2 62)2 63)2* 64)4 65)3 66) 69)3 72)2
    (* ------ doubt)

    ReplyDelete
  40. Hi, every one the comments will be useful to all if post explanations also.

    ReplyDelete
  41. by checking the answers from up to down in this page i am getting confused.whose answers are correct in these?
    will anyone tell me?
    wat about the cut off marks in each section?

    ReplyDelete
  42. animal without modified leg-answer is butterfly

    ReplyDelete
  43. @Anonymous
    what about sparrow?

    ReplyDelete
  44. criteria of passing in this examination is it necessary to pass in each section individually?

    ReplyDelete
  45. are u sure that all the answers are right?for the code of set B......plz give the explanation if possible for q.no 11,13,14,10,5,2,1,4,7,27,29,64,73,71......

    ReplyDelete
  46. blood group not match-answer is -O&B

    ReplyDelete
  47. q2 in set A and Q6 set B will have option 4. because the time taken for vertical motion is same because the vertical velocity is zero in the three case. note that we are neglecting the air drag

    ReplyDelete
  48. Physical sciences Series- B answers are available at http://www.trajectoryeducation.com,
    if any body have B Series paper plz upload in pdf form so that all may check the answers.

    ReplyDelete
  49. What is the selection criteria for csir net.....................Approximately how many marks are sufficent for qualifying net exam?

    ReplyDelete
  50. 7/2 & 7/2 is wrong correct ans is 7/2 & 5/2

    ReplyDelete
  51. DEC-2011 PHYSICAL SCIENCES
    ANSWER SHEET [BOOKLET (B)]
    1. (4) 2. (3) 3. (2) 4. (2) 5. (1) 6. (4) 7. (1) 8. (1)
    9. (3) 10. (1) 11. (1) 12. (3) 13. (3) 14. (2) 15. (4) 16. (1)
    17. (3) 18. (3) 19. (4) 20. (4) 21. (3) 22. (2) 23. (1) 24. ( )
    25. (4) 26. (3) 27. (3) 28. ( ) 29. (3) 30. (4) 31. ( ) 32. (2)
    33. (4) 34. (2) 35. (1) 36. (2) 37. (4) 38. (2) 39. (2) 40. (3)
    41. (1) 42. (3) 43. (3) 44.(1) 45. (4) 46. (3) 47. (3) 48. ( )
    49. (2) 50. (1) 51. (3) 52. (1) 53. (3) 54. (2) 55. (4) 56. (2)
    57. (3) 58. ( ) 59. (1) 60. (3) 61. (2) 62. (1) 63. (3) 64. (3)
    65. (2) 66. (4) 67. (2) 68. (4) 69. (2) 70. (4) 71. (3) 72. (4)
    73. (2) 74. (4) 75. (1)

    ReplyDelete
  52. inme koi right answer bhi h

    ReplyDelete
  53. My answers for Booklet code A are,

    21.Unbiased dice - (2)
    22.Equation for plane - (2)
    23.Eigenvalues of 3x3 matrix - (3)
    24.Legendare Polynomial - (4)
    25.Two particles on central potential - (1)
    27.Potential of a diatomic molecule - (4)
    28.Double pendulum - (2)
    33.Static charge distribn - answer isn't given.
    34.Positronium - (2)
    36.Particle in 1D potential V(x)=V(-x) - (2)
    37.Perturbation H'=bx^4 - (1)
    38.Internal Energy - (2)
    39.Number density of free electrons - (1)
    40.Maxwellian distribution - (3)
    52.An annulus of mass m - (1)
    53.Trajectory on zp plane - (1)
    57.Uncertainty in harmonic oscillator - (1)
    58.The wave function of a particle at t=0.. - (2)
    59.Constant perturbation - (3)
    64.Zener diode - (2)
    65.Monochromatic light - (1)
    73.An electron of energy 27GeV - (1)
    74.Shell model parity - (3)
    75.Mirror Nuclei - (2)

    I've verified these answers. Please let me know if there's any error.

    ReplyDelete
  54. @Anonymous

    The answer is tA=tB=tC because the horizontal distances vary according to the horizontal component of velocity which depends on the kicking. but vertical component depends only on acceleration due to gravity.

    ReplyDelete
  55. Q No 74
    I think answer is 3 (7/2 and 5/2)

    ReplyDelete
  56. when we can expect DEc 2011 results

    ReplyDelete
  57. Physical science answer key for booklet B
    Part B
    21-3, 22-2, 23-1, 24-1, 25-4, 26-
    27-3,28-4,29-3,30-4,31- no circuit,32-2,33-4,34-2,35-1,36-2,37-3,38-2,39-1,40-3,41-1,42-3,43-3,44-1,45-4.

    Part c
    46-4, 47-1(HERA experiment),48-1,49-2,50-1,51-3,52-1,53-3,54-2,55-4,56-2,57-3,58-1(dT/dt)time factor &-D generates major variation),59-1,60-3,61-2,62-3(E tot= 3/2 NKTEavg),63-2,64-3,65-2,66-2,67-2,68-4(at7000deg D1/D2=.55 at 3000deg D1/D2=.98),69-3(I order corection inver propo. to 4), 70-2, 71-4(Acc Debay's theory), 72-2(Kinetic theory of gases but 0K Eavg =0),73-2,74-4,75-1(n=nhc/wav lent, P=vi)

    ReplyDelete

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