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

CBSE CLASS XII 2015 Questions

• 1.

  A proton and an \( \alpha \)-particle enter with the same velocity \( \vec{v} \) in a uniform magnetic field \( \vec{B} \) such that \( \vec{v} \perp \vec{B} \). The ratio of the radii of their paths is:

  • 2
  • \( \frac{1}{2} \)
  • \( \frac{1}{4} \)
  • 4
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• 2.

  Draft an invitation card on behalf of the Principal of J.B. Bhatia Public School for the launch of ‘Yoga for Life’ programme in the school. Mention a compelling highlight of the programme along with other necessary details.
  

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• 3.

  Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the codes (A), (B), (C), and (D) as given below.
  Assertion (A): In double slit experiment, if one slit is closed, diffraction pattern due to the other slit will appear on the screen.
  Reason (R): For interference, at least two waves are required.
  

  • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
  • Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
  • Assertion (A) is true, but Reason (R) is false.
  • Both Assertion (A) and Reason (R) are false.
    
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• 4.

  Two coherent waves, each of intensity \( I_0 \), produce interference pattern on a screen. The average intensity of light on the screen is:

  • zero
  • \( I_0 \)
  • \( 2I_0 \)
  • \( 4I_0 \)
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• 5.

  A piece of a diamagnetic material, free to move when placed in a uniform magnetic field:

  • moves along the field
  • moves opposite to the field
  • moves perpendicular to the field
  • does not move at all
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