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

Expert Teacher provides Vector Algebra MCQ CBSE Maths 12 Science Solutions through Video Solutions 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 Solution in a narrative video format.

** Question:**

** Find the sum of the vectors and **

** Solution Video in** **English****:**

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

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

**Question 2** : 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 3** : Find the scalar quantities from the following:

(i) 10 kg (ii) 2 m north-west (iii)

(iv) 40 W (v) (vi) (View Answer Video)

**Question 4** : Find the direction cosines of the vector joining the points A(1, 2, -3) and B(-1, -2, 1), directed from A to B. (View Answer Video)

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

**Question 1** : Evaluate : (View Answer Video)

**Question 2** : Evaluate : (View Answer Video)

**Question 3** : Evaluate : (View Answer Video)

**Question 4** : Write the value of: (View Answer Video)

**Question 5** : Show that : (View Answer Video)

**Question 1** : 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 2** : On which of the following intervals in the function strictly decreasing? (View Answer Video)

**Question 3** : What is the maximum value of the function sin x+ cos x? (View Answer Video)

**Question 4** : Find the maximum profit that a company can make if the profit function is given by (View Answer Video)

**Question 5** : The length x of a rectangle is decreasing at the rate of 5cm/minute. and width y is increasing at the rate of 4cm/minute. When x=8cm and y=6 cm, find the rate of changes of:

(a) the area of the rectangle. (View Answer Video)

**Question 1** : What value do you observe in real life scenario ? (View Answer Video)

**Question 2** : Solve for

(View Answer Video)

**Question 3** : Solve for

(View Answer Video)

**Question 4** : If , then write the value of. (View Answer Video)

**Question 5** : If then value of y lies between.....? (View Answer Video)