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12th Standard - Half Yearly Exam Answer Key 2015-16 Download




12th Standard Half Yearly Exam Answer Keys 2015-16:
  1. 12th Standard | Computer Science 1 Mark Answer Key | Mr. N.Dhanasekaran - English & Tamil Medium Answer Key
  2. 12th Standard | Computer Science 1 Mark Answer Key | Mr. S. Vinoth Kumar - English Medium Answer Key & Question Paper
  3. 12th Standard | Computer Science 1 Mark Answer Key | Mr. V. Soundararajan - English Medium Answer Key
  4. 12th Standard | Computer Science 1 Mark Answer Key | Mr. R. Paramasivam - English Medium Answer Key
  5. 12th Standard | Computer Science 1 Mark Answer Key | Mr. P. Chandrasekaran - English Medium Answer Key
  6. 12th Standard | Computer Science 1 Mark Answer Key | Mr. K. Jayasankar - English Medium Answer Key
  7. 12th Standard | Physics Answer Key | Mr. S. Ravisankar - English Medium Answer Key
  8. 12th Standard | Physics Answer Key | Mr. J. Shanmugavelu - English Medium Answer Key
  9. 12th Standard | Physics Answer Key | Mr. L. Manivannan - Tamil Medium Answer Key
  10. 12th Standard | Physics Answer Key | Mr. S. Vairavel- Tamil Medium Answer Key
  11. 12th Standard | Chemistry Answer Key | R. Sakthivel - Tamil Medium Answer Key
  12. 12th Standard | Chemistry Answer Key | Chellammal Trust - Tamil Medium Answer Key
  13. 12th Standard | Chemistry Answer Key | Mr. N. Veeramani - Tamil Medium Answer Key
  14. 12th Standard | Maths Answer Key | Mr. S. Manigandan - English Medium Answer Key
  15. 12th Standard | Maths Answer Key | Mr. R. Prabagaran - English Medium Answer Key
  16. 12th Standard | Commerce Answer Key | Mr. M. Muthuselvam - Tamil Medium Answer Key
  17. 12th Standard | Commerce Answer Key | Mr. S. Karunakaran - Tamil Medium Answer Key
  18. 12th Standard | Accountancy Answer Key | Mr. S. Karunakaran - Tamil Medium Answer Key
  19. 12th Standard | Accountancy Answer Key | Mr. M. Muthuselvam - Tamil Medium Answer Key
  20. 12th Standard | Tamil Paper 2 Answer Key | Mr. Pothurasa - Click Here
  21. 12th Standard | Tamil Paper 1 Answer Key | Mr. Pothurasa - Click Here
  22. 12th Standard | English Paper 2 Answer Key | Mr. S. John Kulandai - Click Here
  23. 12th Standard | English Paper 1 Answer Key | Mr. S. John Kulandai - Click Here

11 comments:

  1. Maths answer key is good thank you for uploading
    Pls upload physics answer key

    ReplyDelete
  2. Upload physics half yearly answer key 2016

    ReplyDelete
  3. Upload physics answer key 2016 ..half yearly exam

    ReplyDelete
  4. This comment has been removed by the author.

    ReplyDelete
  5. HALF-YEARLY PHYSICS
    Q.No. 1)
    A hollow metal sphere A of radius 6 cm is uniformly charged with 10 μC. Another hollow metal sphere B of radius 3 cm is uniformly charged with 6 μC. A and B are connected externally by a wire. What happens now? Will the charge flow?

    Ans.
    Charge flows from A to B.
    Explanation.
    A hollow metal sphere with uniform charge acts as if the entire charge were concentrated at its centre; and since the electric field inside is zero, the potential is the same from surface to its centre.
    ==> V = k*q/r (V-potential, q-charge, r-radius)
    VA = k*10/6 & VB = k*6/3 ==> VA < VB
    Now, when the two spheres are connected by a wire, charges flow until their potentials become equal; charges that flow through the wire are the free electrons and they will travel from lower to higher potential i.e., from sphere A to B.
    Note: However, conventional current flows from B to A.

    ReplyDelete
  6. HALF-YEARLY PHYSICS
    Q.No. 6)
    When the current sensitivity of a galvanometer increases, the voltage sensitivity
    (a) increases (b) decreases (c) may or may not increase (d) does not change
    ANS.(c) may or may not increase
    Explanation:
    Consider four cases: (i) N - no. of turns, (ii) B - magnetic induction through the coil, (iii) A - area of the coil (not cross-sectional area) and (iv) c - couple per unit twist
    Now,
    C.S. = θ/I = NBA/c ==>
    C.S can be increased by increasing (i) N, (ii) B or/and (iii) A. Also by (iv) decreasing or having low c value. Qn. does not say how C.S has been increased.
    It might be due to increase in B, say.
    In that case [as also in cases (iii) and (iv)], C.S. obviously will increase and so too will V.S. [since V.S. = θ/V = θ/IG]. But when C.S is increased by increasing N, V.S. will not increase.
    ==> When C.S. increases, V.S. may increase [case (ii), (iii) and (iv)] or may not increase [case (i)].
    Pl give your opinion.

    ReplyDelete
  7. Half yearly phy ans key was useful but different ans given for 6 th one mark question which ans is correct

    ReplyDelete

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