## Vector of magnitude 5 units and in the direction opposite to

## 2i + 3j β 6kΒ isΒ ____________

CBSE Class 12 Sample Paper for 2020 Boards

Paper Summary

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Question 10 Important

Question 11 Important

Question 12

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Question 14 (OR 1st Question)

Question 14 (OR 2nd Question) Important

Question 15 (OR 1st Question)

Question 15 (OR 2nd Question) Important You are here

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Question 17 Important

Question 18 (OR 1st Question)

Question 18 (OR 2nd Question)

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Question 21 (OR 1st Question) Important

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Question 26 Important

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Question 28 (OR 1st Question) Important

Question 28 (OR 2nd Question)

Question 29

Question 30 Important

Question 31 (OR 1st Question) Important

Question 31 (OR 2nd Question)

Question 32 Important

Question 33 (OR 1st Question) Important

Question 33 (OR 2nd Question) Important

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Question 35 (OR 1st Question) Important

Question 35 (OR 2nd Question) Important

Question 36 Important

Class 12

Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

Last updated at Oct. 22, 2019 by Teachoo

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Question 15 (OR 2nd Question) Vector of magnitude 5 units and in the direction opposite to 2π Μ + 3π Μ β 6π Μ is ____________ Let π β = 2π Μ + 3π Μ β 6π Μ Magnitude of π β = β(22+32+(β6)2) |π β | = β(4+9+36) = β49 = 7 Unit vector opposite to direction of π β = β1 Γ 1/|π β | . π β = (β1)/7 (2π Μ + 3π Μ β 6π Μ) Thus, Vector with magnitude 1 opposite to π β = (β1)/7 (2π Μ + 3π Μ β 6π Μ) Vector with magnitude 5 opposite to π β = (β5)/7 (2π Μ + 3π Μ β 6π Μ) = 5/7 (β2π Μ β 3π Μ + 6π Μ) Hence, the required vector is π/π (β2π Μ β 3π Μ + 6π Μ)