. The vector
Z=3-4i is turned anticlockwise through an angle of 180 and stretched 2.5 times. The complex number corresponding to the newly obtained vector is
Best Answer
Ans: B
Sol: (3 – 4i) i.e., (3, -4) lie in fourth quadrant in complex plane, after turned anticlockwise through 180this will lie in II quadrant, therefore, the number will be -3+4i, now after stretching it 2.5 times i.e., multiplying by 2.5, the required complex number will be 
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