If the vertex of a parabola be at origin and directrix be x+5 = 0 , then its lat

Question

If the vertex of a parabola be at origin and directrix be x+5 = 0 , then its latus rectum is

Options:

A . 5

B . 10

C . 20

D . 40

Answer: Option C
:
C
Distance between vertex and directrix = a = 5 units.
Therefore , latus rectum = 4a = 20

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