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Question

Assertion :Let z be a complex number.The equation |z1|+|zi|=2 represents an ellipse. Reason: The equation |zz1|+|zz2|=k where k is positive, represents an ellipse.

A
Both (A) & (R) are individually true & (R) is correct explanation of (A).
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B
Both (A) & (R) are individually true but (R) is not the correct (proper) explanation of (A).
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C
(A) is true (R) is false.
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D
(A) is false (R) is true.
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Solution

The correct option is C (A) is true (R) is false.
Reason is true only if k>|z1z2|
Here k=2,z1=1,z2=i
and |z1z2|=|1i|=22>|1i|=2
Reason is false but Assertion is true.

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