Relations and Functions 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 Relations and Functions 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 Relations and Functions not only to explain the proper method of answering question, but deriving right answer too.

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** Question:**

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

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**Question 1** : Let A = {1, 2, 3, 4} and let R = {(2, 2), (3, 3), (4, 4), (1, 2)} be a relation on A. Then, R is, (View Answer Video)

**Question 2** : Let R be the relation in the set N given by :

R = {(a, b) : a = b - 2, b > 6}.

Choose the correct answer : (View Answer Video)

**Question 3** : A function defined as is, (View Answer Video)

**Question 4** : Let * be the binary operation on N given by a * b = LCM of a and b. Find the identity of * in N? (View Answer Video)

**Question 5** : Functions are defined respectively, by , find . (View Answer Video)

**Question 1** : is equal to : (View Answer Video)

**Question 2** : Evaluate :

(View Answer Video)

**Question 3** : Evaluate:

(View Answer Video)

**Question 4** : then find the value of x. (View Answer Video)

**Question 5** : Using principal values, write the value of (View Answer Video)

**Question 1** : If x, y, z are non-zero real numbers, then the inverse of matrix is, (View Answer Video)

**Question 2** : Which of the following is correct? (View Answer Video)

**Question 3** : If=andis Cofactor of , then the value of is given by (View Answer Video)

**Question 4** : Find the equation of the line joining (3, 1) and (9, 3) using determinants. (View Answer Video)

**Question 5** : Evaluate the determinants:. (View Answer Video)

**Question 1** : Find the angle between two vectors a and b with magnitudes and 2 respectively, having (View Answer Video)

**Question 2** : Find the vector quantities :

(i) Work (ii) Force

(iii) Velocity (iv) Displacement. (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 scalar quantities from the following:

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

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

**Question 5** : Find the unit vector in the direction of vector PQ, where P and Q are the points (1, 2, 3) and (4, 5, 6) respectively. (View Answer Video)