CBSE Maths 12 Science MCQ Vector Algebra Solutions in English

Similar Questions from CBSE, 12th Science, Maths, Vector Algebra

Question 1 :  If  and  are two equal vectors, then write the value of   (View Answer Video)

Question 2 :  Find the direction cosines of the vector joining the points A(1, 2, -3) and B(-1, -2, 1) directed from B to A. (View Answer Video)

Question 3 : L and M are two points with position vectors and respectively. Write the position vectors of a point N which divides the line segment LM in the ratio 2:1 externally.   (View Answer Video)

Question 4 : If a line has direction ratios 2, -1, -2, then what are its direction cosines?   (View Answer Video)

Question 5 : Find a vector in the direction of vector which has magnitude 8 unit. (View Answer Video)

Questions from Other Chapters of CBSE, 12th Science, Maths

Probability

Question 1 : P speaks truth in 70% of the cases and Q in 80% of the cases. In what percent of cases are they likely to agree in stating the same fact?  (View Answer Video)

Question 2 : If E and F be two evets such that , , find if E and F are independent events. (View Answer Video)

Question 3 : In a group of 30 scientists workings on an experiment, 20 never commit error in their work and are reporting results elaborately. Two scientists are selected at random from the group. Find the probability distribution of the number of selected scientists who never commit error in work and reporting. Also find the mean of the distribution. What values are described in this question?  (View Answer Video)

Question 4 : A speaks truth in 75% of the cases, while B in 90% of the cases. In what percent of cases are they likely to contradict each other in stating the same fact? Do you think that statement of B is always true?     (View Answer Video)

Question 5 : If  and  then find .  (View Answer Video)

Three Dimensional Geometry

Question 1 : Find the equation of the plane that contains the point (1, -1, 2) and is perpendicular to both the planes 2x + 3y - 2z = 5 and x + 2y - 3z = 8. Hence find the distance of point P(-2, 5, 5) from the plane obtained above. (View Answer Video)

Question 2 : Find the co-ordinates of the point where the line through the points A(3, 4, 1) and B(5, 1, 6) crosses the XY-plane. Also find angle which this line makes with the XZ-plane. (View Answer Video)

Question 3 : If a line makes angles  with the positive direction of co-ordinate axes, then write the value of (View Answer Video)

Question 4 : Find the distance between the point (5, 4, -6) and its image in xy-plane. (View Answer Video)

Question 5 : Find the distance of the point (3, 4, 5) from the plane x + y + z = 2 measured parallel to the line 2x = y = z. (View Answer Video)

Matrices

Question 1 : Using elementary transformation, find the inverse of the matrix . (View Answer Video)

Question 2 : Let  Find 3A - C. (View Answer Video)

Question 3 : Find the value of y,  from the equation: . (View Answer Video)

Question 4 : Find the value of x from the equation: . (View Answer Video)

Question 5 : Find the transpose of the matrix: . (View Answer Video)