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6. Find a vector of magnitude 5 units, and parallel to the resultant of the vectors a = 2i + 3j – k and b = i – 2j + k. .
15
Nov
6. Find a vector of magnitude 5 units, and parallel to the resultant of the vectors a = 2i + 3j – k and b = i – 2j + k. . 6. Find a vector of magnitude 5 units and parallel to the resultant of the vectors a = 2i + 3j - k [...]
5. Find the value of x for which x(i + j + k ) is a unit vector.
15
Nov
5. Find the value of x for which x(i + j + k ) is a unit vector. 5. Find the value of x for which x(i + j + k ) is a unit vector. November 15, 2021 Category: Chapter 10 - Vector Algebra , Maths , NCERT Exemplar Class 12 ,
4. If a = b + c, then is it true that I a I = I b I + I c I? Justify your answer.
15
Nov
4. If a = b + c, then is it true that I a I = I b I + I c I? Justify your answer. 4. If a = b + c then is it true that I a I = I b I + I c I? Justify your answer. November 15, 2021 [...]
3. A girl walks 4 km towards west, then she walks 3 km in a direction 30° east of north and stops. Determine the girl’s displacement from her initial point of departure.
15
Nov
3. A girl walks 4 km towards west, then she walks 3 km in a direction 30° east of north and stops. Determine the girl’s displacement from her initial point of departure. 3. A girl walks 4 km towards west then she walks 3 km in a direction 30° east of north and stops. Determine [...]
2. Find the scalar components and magnitude of the vector joining the points P(x1 , y1 , z1 ) and Q (x2 , y2 , z2 ).
15
Nov
2. Find the scalar components and magnitude of the vector joining the points P(x1 , y1 , z1 ) and Q (x2 , y2 , z2 ). 2. Find the scalar components and magnitude of the vector joining the points P(x1 y1) y2) z1 ) and Q (x2 z2 ). November 15, 2021 Category: Chapter [...]
1. Write down a unit vector in XY-plane, making an angle of 30° with the positive direction of x-axis.
15
Nov
1. Write down a unit vector in XY-plane, making an angle of 30° with the positive direction of x-axis. 1. Write down a unit vector in XY-plane making an angle of 30° with the positive direction of x-axis. November 15, 2021 Category: Chapter 10 - Vector Algebra , Maths , NCERT Exemplar Class 12 ,
11. Let the vectors a and b be such that I a I = 3 and I b I = sqrt2 / 3, then a x b is a unit vector, if the angle between a and b is
05
Nov
11. Let the vectors a and b be such that I a I = 3 and I b I = sqrt2 / 3, then a x b is a unit vector, if the angle between a and b is 11. Let the vectors a and b be such that I a I = 3 and [...]
10. Find the area of the parallelogram whose adjacent sides are determined by the vectors a = i – j + 3k and b = 2i – 7j + k .
05
Nov
10. Find the area of the parallelogram whose adjacent sides are determined by the vectors a = i – j + 3k and b = 2i – 7j + k . 10. Find the area of the parallelogram whose adjacent sides are determined by the vectors a = i - j + 3k and b [...]
9. Find the area of the triangle with vertices A(1, 1, 2), B(2, 3, 5) and C(1, 5, 5).
05
Nov
9. Find the area of the triangle with vertices A(1, 1, 2), B(2, 3, 5) and C(1, 5, 5). 1 2 3% 5 5) and C(1 9. Find the area of the triangle with vertices A(1 B(2 November 5, 2021 Category: Chapter 10 - Vector Algebra , Maths , NCERT Exemplar Class 12 ,
8. If either a = 0 or b = 0, then a x b = 0 . Is the converse true? Justify your answer with an example.
05
Nov
8. If either a = 0 or b = 0, then a x b = 0 . Is the converse true? Justify your answer with an example. 8. If either a = 0 or b = 0 then a x b = 0 . Is the converse true? Justify your answer with an example. November [...]