If a parabolic reflector is 20 cm in diameter and 5 cm deep, find its focus.

Explanation

Let equation parabola `y^2
=4ax`

`OC=5 cm`

So, `x−`Cordinate of point `A=5
Ab=20`

`AC=(1/2)xxAB=10`)

`A(5,10)`

A Lie on the parabola it will satisfting the eqquation `y^2=(4xx9xx5)`)

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