Vector Algebra MCQ CBSE Maths 12 Science Answers in English

Vector Algebra MCQ CBSE Maths 12 Science Answers in English to enable students to get Answers in a narrative video format for the specific question.

Expert Teacher provides Vector Algebra MCQ CBSE Maths 12 Science Answers through Video Answers in English language. This video solution will be useful for students to understand how to write an answer in exam in order to score more marks. This teacher uses a narrative style for a question from Vector Algebra not only to explain the proper method of answering question, but deriving right answer too.

Please find the question below and view the Answer in a narrative video format.

Question:

Find |x|, if for a unit vector a,(x - a).(x + a) = 12.

Answer Video in English:

You can select video Answers from other languages also. Please check Answers in ( Hindi )

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

Question 1 :  Write a unit vector in the direction of the sum of vectors Questionand Question  (View Answer Video)

Question 2 : Find a vector in the direction of vector Question which has magnitude 21 units.  (View Answer Video)

Question 3 : Evaluate the product (3a - 5b).(2a + 7b). (View Answer Video)

Question 4 : For given vectors,Questionand Questionfind the unit vector in the direction of the vector a + b. (View Answer Video)

Question 5 :  If Question and Question are two equal vectors, then write the value of Question  (View Answer Video)

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

Three Dimensional Geometry

Question 1 : If a line has the direction ratios -18, 12, -4, then what are its direction cosines? (View Answer Video)

Question 2 : A plane makes intercepts -6, 3, 4 respectively on the co-ordinte axes. Find the length of the perpendicular from the origin on it. (View Answer Video)

Question 3 : Find the vector equation of the plane with intercepts 3, -4 and 2 on x, y and z-axis respectively. (View Answer Video)

Question 4 : If the equation of a line AB is Question then, find the direction cosines of a line parallel to AB. (View Answer Video)

Question 5 : Write the vector equation of the plane passing through the point (a, b, c) and parallel to the plane Question (View Answer Video)

Probability

Question 1 : If E and F are two events such that,
 Question, Find P(E or F).         (View Answer Video)

Question 2 : A problem in mathematics is given to 4 students A, B, C, D. Their chances of solving the problem, respectively, are Question  and Question. What is the probability that atmost one of them solve the problem?  (View Answer Video)

Question 3 : A bag contain 2 red, 6 black and 8 green balls. A ball is drawn at random from the bag. Find the probability of black balls:
  (View Answer Video)

Question 4 : A pair of dice is thrown 4 times. If getting a doublet is considered a success, find the probability distribution of the number of successes and hence find its mean.  (View Answer Video)

Question 5 : Of the students in a college, it is known that 60% reside in hostel and 40% are day scholars (not residing in hostel). Previous year results report that 30% of all students who reside in hostel attain  'A' grade and 20% of day scholars attain 'A' grade in their annual examination. At the end of the year, one student is chosen at random from the college and he has an 'A' grade. What is the probability that the student is a hosteler?   (View Answer Video)

Application of Derivatives

Question 1 : The points on the curve Question , where the normal to the curve makes equal intercepts with the axes are, (View Answer Video)

Question 2 : The approximate change in the volume of a cube of side x meters caused by increasing the side by 3% is _____________. (View Answer Video)

Question 3 : The point on the curve Question which is nearest to the point (0, 5) is  (View Answer Video)

Question 4 : The approximate change in the volume of a cube of side x meters caused by increasing the side by 3% is, (View Answer Video)

Question 5 : Find the maximum value of inQuestion the interval [1,3]. find the maximum value of the same function in [-3,-1]. (View Answer Video)