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Question

If z lies on the circle |z|=1, then 2z lies on

A
Circle
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B
Straight line
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C
Parabola
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D
None of these
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Solution

The correct option is A Circle
Given z lies on the circle |z|=1

2z=|2||z|=2|z|=21=2

2z=2

2z also lies on the circle

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