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  • Class 12 Maths Study Material

An Educational platform for Preparation and Practice Class 12. Kidsfront provide unique pattern of learning Maths with free online comprehensive study material in the form of QUESTION & ANSWER for each Chapter of Maths for Class 12. This study material help Class 12, Maths students in learning every aspect of Matrices . Students can understand Matrices concept easily and consolidate their learning by doing Online Practice Tests on Maths,Matrices chapter repeatedly till they excel in Class 12, Matrices . Free ONLINE PRACTICE TESTS on Class 12, Matrices comprise of Hundreds of Questions on Matrices , prepared by the highly professionals team. Every repeat test of Matrices will have new set of questions and help students to prepare themselves for exams by doing unlimited Online Test exercise on Matrices . Attempt ONLINE TEST on Class 12,Maths,Matrices in Academics section after completing this Matrices Question Answer Exercise.


Unique pattern

  • Topic wise:Matrices preparation in the form of QUESTION & ANSWER.
  • Evaluate preparation by doing ONLINE TEST of Class 12, Maths,Matrices .
  • Review performance in PRACTICE TEST and do further learning on weak areas.
  • Attempt repeat ONLINE TESTS of Maths Matrices till you excel.
  • Evaluate your progress by doing ONLINE MOCK TEST of Class 12, Maths, All TOPICS.


Matrices

If two matrices A and B are of order p × q and r × s respectively, can be subtracted only, if


a) P = q
b) P = q , r = s
c) P = r , q = s
d) P = s , q = r


✔Answer
Correct Answer Is : P = r , q = s
Solution Is :
If I = , J = and B = , then B equals?

a) I sin θ + J cos θ
b) I cos θ - J sin θ
c) I cos θ + J sin θ
d) (-I cos θ + J sin θ)


✔Answer
Correct Answer Is : I cos θ + J sin θ
Solution Is :
If the trace of a matrix A is 5, then the trace of the matrix 3A is?

a) 5/3
b) 3/5
c) 15
d) 8


✔Answer
Correct Answer Is : 15
Solution Is :
If A and B are two matrices such that A + B and AB are both defined, then

a) Number of columns of A = Number of rows of B
b) A and B are square matrices of same order
c) A and B are two matrices not necessarily of same order
d) None of these


✔Answer
Correct Answer Is : A and B are square matrices of same order
Solution Is :
If 2A + 3B = and A + 2B = , then B is equal to?

a)
b)
c)
d)



✔Answer
Correct Answer Is :
Solution Is :
What must be the matrix X, if 2X + = ?

a)
b)
c)
d)



✔Answer
Correct Answer Is :
Solution Is :
If A = is singular, then the possible values of x are?

a) 0, 12, -12
b) 0, 5, -5
c) 0, 1, -1
d) 0, 4, -4



✔Answer
Correct Answer Is : 0, 12, -12
Solution Is :
For how many values of x in the closed interval [-4, -1] is the matrix A = singular?

a) 0
b) 1
c) 2
d) 3


✔Answer
Correct Answer Is : 1
Solution Is :
If A = diag (2, -1, 3), B = diag (-1, 3, 2), then (A2)B = ?

a) B
b) Diag (3, 1, 8)
c) Diag (-4, 3, 18)
d) Diag (5, 4, 11)


✔Answer
Correct Answer Is : Diag (-4, 3, 18)
Solution Is :
If A and B are square matrices of order 2, then (A + B)2 = ?

a) A2 + AB + BA + B2
b) A2 + 2BA + B2
c) A2 + 2AB + B2
d) A2 + BA + B2


✔Answer
Correct Answer Is : A2 + AB + BA + B2
Solution Is :

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