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  • If  is the vertex and y-axis the directrix of a parabola, then its focus is<st

If (2,0)  is the vertex and y-axis the directrix of a parabola, then its focus is

Option: 1

(2,0)


Option: 2

(-2,0)


Option: 3

(4,0)


Option: 4

(-4,0)


Answers (1)

best_answer

\mathrm{a= } distance of vertex from focus \mathrm{= } distance of vertex from directrix \mathrm{= 2}.

So, focus is at \mathrm{(4,0)}.

Hence  (C)  is  the  correct answer.

Posted by

Sanket Gandhi

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