CBSE Class 12 Question Paper 2015 (Available): Check Previous Year Question Paper with Solution PDF (2023-2012)

CBSE CLASS XII 2015 Questions

• 1.

  Find the least value of ‘a’ so that $f(x) = 2x^2 - ax + 3$ is an increasing function on $[2, 4]$.

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• 2.

  Two wires of the same material and the same radius have their lengths in the ratio 2:3. They are connected in parallel to a battery which supplies a current of 15 A. Find the current through the wires.

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• 3.

  “The political power or kingship was rarely dependent on birth as Kshatriyas but also open to anyone who could muster support and resources.” Explain the statement with the examples from sixth century BCE onwards.

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• 4.

  A conductor of length \( l \) is connected across an ideal cell of emf E. Keeping the cell connected, the length of the conductor is increased to \( 2l \) by gradually stretching it. If R and \( R' \) are initial and final values of resistance and \( v_d \) and \( v_d' \) are initial and final values of drift velocity, find the relation between:
  \( R' \) and \( R \)
  \( R' = 4R \)

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• 5.

  How was the 'Students on Ice' programme significant in giving an awakening call to the younger generation? (Journey to the End of the Earth)

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