The ratio of the moving point from the focus to its perpendicluar distance from directrix is always for a conic and called as

Eccentricity

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Constant

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Directrix

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Variable

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Vertex

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Zero

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Solution

The correct option is B Constant
From the definition of conic, we have:
The ratio of the moving point from the focus to its perpendicluar distance from directrix is always fixed or constant for a conic and called as eccentricity $(e) .$

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Similar questions

Conic is defined as the locus of a point which moves such that the ratio of its distances from a fixed point called

to the perpendicular distance from a fixed line called

is always constant.

A conic section is a locus of a point P which moves in such a way that its distance from a fixed point S always bears a constant ratio to its distance from a fixed line, all being in the same plane. The fixed point is called …… and the fixed line is called ……

Match the columns by referring to the definition given below.

"A conic is the locus of a point which moves in a plane so that its distance from a fixed point is in a constant ratio to its perpendicular distance from a fixed straight line”.

\begin{matrix} Definition & Name P) Fixed point & 1. Axis Q) Fixed straight line & 2. Vertex R) Constant ratio & 3. Directrix S) Line passing through fixed point and perpendicular to fixed line & 4. Focus 5. Eccentricity \end{matrix}

Q. If a perpendicular be let fall from any point P upon its polar prove that the distance of the foot of this perpendicular from the focus is equal to the distance of the point P from the directrix.

Match the columns by referring to the definition given below.

"A conic is the locus of a point which moves in a plane so that its distance from a fixed point is in a constant ratio to its perpendicular distance from a fixed straight line”.

\begin{matrix} Definition & Name P) Fixed point & 1. Axis Q) Fixed straight line & 2. Vertex R) Constant ratio & 3. Directrix S) Line passing through fixed point and perpendicular to fixed line & 4. Focus 5. Eccentricity \end{matrix}

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The ratio of the moving point from the focus to its perpendicluar distance from directrix is always for a conic and called as

The correct option is B ConstantFrom the definition of conic, we have: The ratio of the moving point from the focus to its perpendicluar distance from directrix is always fixed or constant for a conic and called as eccentricity(e).

The correct option is B Constant
From the definition of conic, we have:
The ratio of the moving point from the focus to its perpendicluar distance from directrix is always fixed or constant for a conic and called as eccentricity $(e) .$