1.

If polar of P w.r.t. S=0 touch the circle x^(2)+y^(2)=a^(2), the locus of P is

Answer»

`a^(2)[(X+g)^(2)+(y+f)^(2)]=C^(2)`
`(gx+fy+c)^(2)=a^(2)[(x+g)^(2)+(y+f)^(2)]`
`(gx+fy+c)^(2)=a^(2)`
`(gx+fy+c)^(2)=a^(2)(x^(2)+y^(2))`

ANSWER :B


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