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

Expert Teacher provides Maths Vector Algebra CBSE 12 Science Answers for MCQ 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:**

** Answer Video in** **English****:**

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

**Question 1** : Find the vector quantities from the following:

(i) Time period (ii) Distance (iii) Force

(iv) Velocity (v) Work done

(View Answer Video)

**Question 2** : Find the unit vector in the direction of the vector (View Answer Video)

**Question 3** : Write a vector in the direction of the vector that has magnitude 9 units. (View Answer Video)

**Question 4** : Find the position vector of a point which divides the join of points with position vectors and externally in the ration 2:1. (View Answer Video)

**Question 5** : Find a unit vector in the direction of (View Answer Video)

**Question 1** : Find approximate value of. (View Answer Video)

**Question 2** : The normal at the point (1, 1) on the curve is: (View Answer Video)

**Question 3** : The rate of change of the area of a circle with respect to its radius r at r = 6 cm is : (View Answer Video)

**Question 4** : The total revenue in rupees received from the sale of x units of a product is given by . The marginal revenue, when x=15 is: (View Answer Video)

**Question 5** : For all values of x, the minimum value of is : (View Answer Video)

**Question 1** : Using integration, find the area of the triangle ABC, where A is (2,3), B is (4,7) and C is (6,2). (View Answer Video)

**Question 2** : Using integration, find the area of the region bounded by the line 2x + y = 4, 3x - 2y = 6 and x - 3y + 5 = 0. (View Answer Video)

**Question 3** : Find the area of the given curves and given lines:

and x-axis (View Answer Video)

**Question 4** : Find the area of the region in the first quadrant enclosed by x-axis, line and the circle (View Answer Video)

**Question 5** : Find the area of smaller region bounded by the ellipse and the line . (View Answer Video)

**Question 1** : A coin is tossed three times. Find P(F/E), where E : at most two tails and F : atleast one tail. (View Answer Video)

**Question 2** : In a group of 400 people, 160 are smokers and non-vegetarian, 100 are smokers and vegetarian and the remaining are non-smokers and vegetarian. The probabilities of getting a special chest disease are 35%, 20% and 10% respectively. A person is chosen from the group at random and is found to be suffering from the disease. What is the probability that the selected person is a smoker and non-vegetarian? What value is reflected in this question? (View Answer Video)

**Question 3** : If P(A)=, P(B)= and =, find . (View Answer Video)

**Question 4** : A girl throws a die. If she gets a 5 or 6, she tosses a coin three times and notes the number of heads. If she gets 1, 2, 3 or 4, she tosses a coin two times and notes the number of heads obtained. If she obtained exactly two heads, what is the probability that she threw 1, 2, 3, or 4 with the die? (View Answer Video)

**Question 5** : A die is thrown 6 times. If 'getting an odd number' is a 'success', what is the probability of obtaining:

atmost 5 successes? (View Answer Video)