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The circles : x^2+y^2 +2g1x-a^2 =0 and x...

The circles : `x^2+y^2 +2g_1x-a^2 =0` and `x^2+y^2 +2g_2x-a^2=0` cut each other orthogonally. Let `p_1` and `p_2` be the perpendiculars from (0, a) and (0, - a) on the common tangent of these circles. Then `p_1p_2` equals :

A

`a^2/2`

B

`a^2`

C

`a^2+2`

D

`2a^2`

Text Solution

Verified by Experts

The correct Answer is:
B
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