NCERT Class 12-Mathematics: Exemplar Chapter –4 Determinants Part 12

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Question 27:

The determinant equals

(A)

(B)

(C)

(D) None of these

Answer: (D)

Question 28:

The number of distinct real roots of in the interval is

(A)

(B)

(C)

(D)

Answer: (C)

Question 29:

If A, B and C are angles of a triangle, then the determinant is equal to

(A)

(B)

(C)

(D) None of these

Answer: (A)

Question 30:

is equal to

(A)

(B)

(C)

(D)

Answer: (A)

Question 31:

The maximum value of is ( is real number)

(A)

(B)

(C)

(D)

Answer: (A)

Question 32:

If

(A)

(B)

(C)

(D)

Answer: (C)

Question 33:

If then exists if

(A)

(B)

(C)

(D) None of these

Answer: (D)

Question 34:

If A and B are invertible matrices, then which of the following is not correct?

(A)

(B)

(C)

(D)

Answer: (D)