WBJEE: Important Questions and Preparation Tips - Complex Numbers

West Bengal Joint Entrance Examination (WBJEE) is a state level common entrance test organized by West Bengal Joint Entrance Examinations Board for admission to the Undergraduate Level Engineering and Medical Courses through a common entrance test in the State of West Bengal. This article contains all important concepts, formulae and some important solved questions of chapter Complex Numbers. This can be used as a quick revision material for WBJEE entrance examination. This is not an easy topic. You need to do a lot of practice to master this topic.  About 3-5 questions are asked from this chapter in WBJEE examination.

Definition:  A complex number is a number that can be written in form x + iy, where x and y are real numbers and i is an imaginary part.

WBJEE 2017: Syllabus-Mathematics

Some important concepts and formulae are given below:

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Some important solved questions are given below:

Question 1:

Solution 1:

Hence, the correct option is (b).

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Question 2:

Solution 2:

Hence, the correct option is (a).

Question 3:

Solution 3:

Hence, the correct option is (c).

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Question 4:

Solution 4:

Hence, the correct option is (d).

Question 5:

Solution 5:

Hence, the correct option is (b).

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UPSEE Solved Question Paper: 2015