NCERT Class 11-Math's: Chapter –5 Complex Numbers and Quadratic Equations Part 15
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Question 47:
is possible if
(A)
(B)
(C)
(D)
Answer: (C)
Question 48:
The real value of for which the expression is a real number is:
(A)
(B)
(C)
(D)None of these
Answer: (C)
Question 49:
The value of when is:
(A)
(B)
(C)
(D) none of these
Answer: (C)
Question 50:
If , where then is
(A)
(B)
(C)
(D) None of these
Answer: (A)