The eccentricity of a circle is?
A
0
B
1
C
Between 0 and 1
D
Greater than 1
Analysis & Theory
For a circle, eccentricity e = 0.
The eccentricity of a parabola is?
A
0
B
1
C
Between 0 and 1
D
Greater than 1
Analysis & Theory
For a parabola, eccentricity e = 1.
The eccentricity of an ellipse is?
A
0
B
1
C
Between 0 and 1
D
Greater than 1
Analysis & Theory
For an ellipse, eccentricity e lies between 0 and 1.
The eccentricity of a hyperbola is?
A
0
B
1
C
Between 0 and 1
D
Greater than 1
Analysis & Theory
For a hyperbola, eccentricity e > 1.
Directrix of a parabola is?
A
A fixed point
B
A fixed straight line
C
A circle
D
None of these
Analysis & Theory
A parabola is the locus of a point equidistant from a fixed point (focus) and a fixed line (directrix).
The length of the latus rectum of a parabola y² = 4ax is?
A
a
B
2a
C
3a
D
4a
Analysis & Theory
The length of the latus rectum in parabola y² = 4ax is 4a.
In ellipse x²/a² + y²/b² = 1, the length of the latus rectum is?
A
2a²/b
B
2b²/a
C
a²/b
D
b²/a
Analysis & Theory
For an ellipse, latus rectum length = 2b²/a.
In hyperbola x²/a² - y²/b² = 1, the length of the latus rectum is?
A
2a²/b
B
2b²/a
C
a²/b
D
b²/a
Analysis & Theory
For a hyperbola, latus rectum length = 2b²/a.