CBSE Class 12 Hindi Elective Question Paper 2017 with Answer Key (April 22, Set 1 - 29/2/1)

CBSE CLASS XII Questions

• 1.

  The diagonals of a parallelogram are given by \( \mathbf{a} = 2 \hat{i} - \hat{j} + \hat{k} \) and \( \mathbf{b} = \hat{i} + 3 \hat{j} - \hat{k}\) . Find the area of the parallelogram.

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• 2.

  Draw a rough sketch for the curve $y = 2 + |x + 1|$. Using integration, find the area of the region bounded by the curve $y = 2 + |x + 1|$, $x = -4$, $x = 3$, and $y = 0$.

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• 3.

  ‘Deep Water’ and ‘Indigo’ bring out the importance of overcoming fear. Discuss the two texts with reference to the above statement.

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• 4.

  Write a comprehensive report detailing the activities undertaken by students as part of the World Environment Day celebrations. You are Ranjana/Rajan, a student of class XII and a member of the school magazine editorial board. You may organise your report by using the following cues:
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• 5.

  Three students run on a racing track such that their speeds add up to 6 km/h. However, double the speed of the third runner added to the speed of the first results in 7 km/h. If thrice the speed of the first runner is added to the original speeds of the other two, the result is 12 km/h. Using the matrix method, find the original speed of each runner.

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• 6.

  A rectangular glass slab ABCD (refractive index 1.5) is surrounded by a transparent liquid (refractive index 1.25) as shown in the figure. A ray of light is incident on face AB at an angle \(i\) such that it is refracted out grazing the face AD. Find the value of angle \(i\).

  

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