NCERT Exemplar Class 12
8. Find the magnitude of two vectors a and b , having the same magnitude and such that the angle between them is 60^o and their scalar product is 1/2 .
05
Nov
8. Find the magnitude of two vectors a and b , having the same magnitude and such that the angle between them is 60^o and their scalar product is 1/2 . 8. Find the magnitude of two vectors a and b having the same magnitude and such that the angle between them is 60^o and [...]
7. Evaluate the product (3a – 5b) . (2a + 7b).
05
Nov
7. Evaluate the product (3a – 5b) . (2a + 7b). 7. Evaluate the product (3a - 5b) . (2a + 7b). November 5, 2021 Category: Chapter 10 - Vector Algebra , Maths , NCERT Exemplar Class 12 ,
6. Find, I a I and I b I if (a + b) . (a – b) and I a I = 8 I b I.
05
Nov
6. Find, I a I and I b I if (a + b) . (a – b) and I a I = 8 I b I. 6}. Find I a I and I b I if (a + b) . (a - b) and I a I = 8 I b I. November 5, 2021 [...]
5. Show that each of the given three vectors is a unit vector: 1/7(2i + 3j + 6k), 1/7(3i – 6j + 2k), 1/7(6i + 2j – 3k) Also, show that they are mutually perpendicular to each other.
05
Nov
5. Show that each of the given three vectors is a unit vector: 1/7(2i + 3j + 6k), 1/7(3i – 6j + 2k), 1/7(6i + 2j – 3k) Also, show that they are mutually perpendicular to each other. 1/7(3i - 6j + 2k) 1/7(6i + 2j - 3k) Also 5. Show that each of the [...]
4. Find the projection of the vector i + 3j + 7k on the vector 7i – j + 8k .
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Nov
4. Find the projection of the vector i + 3j + 7k on the vector 7i – j + 8k . 4. Find the projection of the vector i + 3j + 7k on the vector 7i - j + 8k . November 5, 2021 Category: Chapter 10 - Vector Algebra , Maths , NCERT [...]
3. Find the projection of the vector i – j on the vector i + j .
05
Nov
3. Find the projection of the vector i – j on the vector i + j . 3. Find the projection of the vector i - j on the vector i + j . November 5, 2021 Category: Chapter 10 - Vector Algebra , Maths , NCERT Exemplar Class 12 ,
2. Find the angle between the vectors i – 2j +3k and 3i -2j + k.
05
Nov
2. Find the angle between the vectors i – 2j +3k and 3i -2j + k. 2. Find the angle between the vectors i - 2j +3k and 3i -2j + k. November 5, 2021 Category: Chapter 10 - Vector Algebra , Maths , NCERT Exemplar Class 12 ,
1. Find the angle between two vectors a and b with magnitudes sqrt 3 and 2, respectively having a . b = sqrt 6.
05
Nov
1. Find the angle between two vectors a and b with magnitudes sqrt 3 and 2, respectively having a . b = sqrt 6. 1. Find the angle between two vectors a and b with magnitudes sqrt 3 and 2 respectively having a . b = sqrt 6. November 5, 2021 Category: Chapter 10 - [...]
19. If a and b are two collinear vectors, then which of the following are incorrect:
05
Nov
19. If a and b are two collinear vectors, then which of the following are incorrect: 19. If a and b are two collinear vectors then which of the following are incorrect: November 5, 2021 Category: Chapter 10 - Vector Algebra , Maths , NCERT Exemplar Class 12 ,
18. In triangle ABC (Fig 10.18), which of the following is not true: (A) AB + BC + CA = 0
05
Nov
18. In triangle ABC (Fig 10.18), which of the following is not true: (A) AB + BC + CA = 0 18. In triangle ABC (Fig 10.18) which of the following is not true: (A) AB + BC + CA = 0 November 5, 2021 Category: Chapter 10 - Vector Algebra , Maths , NCERT [...]