We are continuing our series on XII MATHS – Tips for Board examination preparation. After Calculus, let us take up **Vector-3D**, which is the next highest cluster of 17 marks. Out of that **Vector** chapter has weightage of 5-6 marks. There will be one 4-mark question and one or two 1-mark questions.

It’s a small chapter and your target time for first revision should be 4-5 hours appx for the two exercises (8.1 & 8.2) and the Misc exercise and also little bit of previous years’ questions from reference book.

## Class XII CBSE Maths – Vector 3D

**Some important questions from NCERT are as follows:**** **

Exercise |
Important Examples |
Important Questions |

Ex 10.1 |
Definitions: zero vector, unit vector, collinear vector | Question 5 |

Ex 10.2 |
Parallelogram law of vector addition examples 7, 8, 11 | Questions 8, 10, 11, 14, 17 |

Ex 10.3 |
Observations – page 442, examples 15, 18, 19, 20 | Questions 5, 8, 9, 11, 12, 13, 16 |

Ex 10.4 |
Observations – page 449 to 451, Examples 25 | Questions 2, 3, 4, 9, 12 |

Misc Ex 10 |
examples 26, 29, 30 | Questions 6, 9, 11, 12, 14, 17 |

**Tips: **

- Along with numerical, some theory concepts are also important in this chapter.
- The concepts will be used in 3D chapter also.

This first revision of this topic should be completed within 2-3 days.

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