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The equation of a diameter of the circle...

The equation of a diameter of the circle `x^2 + y^2 = 2ay` that is perpendicular to the straight line x + 2y = 4 is :

A

`2 x-y-a=0`

B

`2 x-y+a=0`

C

`x+2 y-a=0`

D

`2 x-y-2 a=0`

Text Solution

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The correct Answer is:
D
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