Page 1
JEE Main Previous Year Questions
(2025): Hyperbola
Q1. Let one focus of the hyperbola ?? :
?? ?? ?? ?? -
?? ?? ?? ?? = ?? be at ( v ???? , ?? ) and the
corresponding directrix be ?? =
?? v ????
. If e and ?? respectively are the eccentricity and the
length of the latus rectum of H , then ?? ( ?? ?? + ?? ) is equal to:
A. 14
B. 15
C. 16
D. 12
Ans: C
Solution:
ae = v 10 and
a
e
=
9
10
? a
2
= 9 and e =
v 10
3
( ae)
2
= a
2
+ b
2
10 = 9 + b
2
? b
2
= 1
Now ?
2 b
2
a
=
2( 1)
3
= 9( e
2
+ l)
= 10 + 6
= 16
Q2. If the equation of the hyperbola with foci ( ?? , ?? ) and ( ?? , ?? ) is ?? ?? ?? - ?? ?? - ???? +
???? + ?? = ?? , then ?? + ?? + ?? is equal to ____ .
Ans: 141
Page 2
JEE Main Previous Year Questions
(2025): Hyperbola
Q1. Let one focus of the hyperbola ?? :
?? ?? ?? ?? -
?? ?? ?? ?? = ?? be at ( v ???? , ?? ) and the
corresponding directrix be ?? =
?? v ????
. If e and ?? respectively are the eccentricity and the
length of the latus rectum of H , then ?? ( ?? ?? + ?? ) is equal to:
A. 14
B. 15
C. 16
D. 12
Ans: C
Solution:
ae = v 10 and
a
e
=
9
10
? a
2
= 9 and e =
v 10
3
( ae)
2
= a
2
+ b
2
10 = 9 + b
2
? b
2
= 1
Now ?
2 b
2
a
=
2( 1)
3
= 9( e
2
+ l)
= 10 + 6
= 16
Q2. If the equation of the hyperbola with foci ( ?? , ?? ) and ( ?? , ?? ) is ?? ?? ?? - ?? ?? - ???? +
???? + ?? = ?? , then ?? + ?? + ?? is equal to ____ .
Ans: 141
Solution:
Equation of hyperbola is
( ?? - 6)
2
?? 2
-
( ?? - 2)
2
4 - ?? 2
= 1
? ( 4 - ?? 2
) ( ?? - 6)
2
- ?? 2
( ?? - 2)
2
= ?? 2
( 4 - ?? 2
)
comparing with 3?? 2
- ?? 2
- ???? + ???? + ?? = 0, we get a
2
= 1 and ?? = 36, ?? = 4 and ?? = 101
? a + ß + ? = 141
Q3. Let ?? ?? and ?? ?? be the eccentricities of the ellipse
?? ?? ?? ?? +
?? ?? ????
= ?? and the hyperbola
?? ?? ????
-
?? ?? ?? ?? = ?? , respectively. If ?? < ?? and ?? ?? ?? ?? = ?? , then the eccentricity of the ellipse
having its axes along the coordinate axes and passing through all four foci (two of the
ellipse and two of the hyperbola) is :
A.
4
5
B.
3
5
C.
v 7
4
D.
v 3
2
Ans: B
Solution:
?? 1
2
= 1 -
?? 2
25
?? 2
2
= 1 -
?? 2
16
? ?? 1
2
?? 2
2
= 1
(1 -
?? 2
25
) (1 +
?? 2
16
) = 1
? 2 +
?? 2
16
-
?? 2
25
-
?? 2
400
= 1
?
9?? 2
400
=
?? 4
400
?? 2
= 9
?? 2
9
+
?? 2
25
= 1
?? 2
16
-
?? 2
9
= 0
?? 1
v
1 -
9
25
?? 1
=
4
5
Page 3
JEE Main Previous Year Questions
(2025): Hyperbola
Q1. Let one focus of the hyperbola ?? :
?? ?? ?? ?? -
?? ?? ?? ?? = ?? be at ( v ???? , ?? ) and the
corresponding directrix be ?? =
?? v ????
. If e and ?? respectively are the eccentricity and the
length of the latus rectum of H , then ?? ( ?? ?? + ?? ) is equal to:
A. 14
B. 15
C. 16
D. 12
Ans: C
Solution:
ae = v 10 and
a
e
=
9
10
? a
2
= 9 and e =
v 10
3
( ae)
2
= a
2
+ b
2
10 = 9 + b
2
? b
2
= 1
Now ?
2 b
2
a
=
2( 1)
3
= 9( e
2
+ l)
= 10 + 6
= 16
Q2. If the equation of the hyperbola with foci ( ?? , ?? ) and ( ?? , ?? ) is ?? ?? ?? - ?? ?? - ???? +
???? + ?? = ?? , then ?? + ?? + ?? is equal to ____ .
Ans: 141
Solution:
Equation of hyperbola is
( ?? - 6)
2
?? 2
-
( ?? - 2)
2
4 - ?? 2
= 1
? ( 4 - ?? 2
) ( ?? - 6)
2
- ?? 2
( ?? - 2)
2
= ?? 2
( 4 - ?? 2
)
comparing with 3?? 2
- ?? 2
- ???? + ???? + ?? = 0, we get a
2
= 1 and ?? = 36, ?? = 4 and ?? = 101
? a + ß + ? = 141
Q3. Let ?? ?? and ?? ?? be the eccentricities of the ellipse
?? ?? ?? ?? +
?? ?? ????
= ?? and the hyperbola
?? ?? ????
-
?? ?? ?? ?? = ?? , respectively. If ?? < ?? and ?? ?? ?? ?? = ?? , then the eccentricity of the ellipse
having its axes along the coordinate axes and passing through all four foci (two of the
ellipse and two of the hyperbola) is :
A.
4
5
B.
3
5
C.
v 7
4
D.
v 3
2
Ans: B
Solution:
?? 1
2
= 1 -
?? 2
25
?? 2
2
= 1 -
?? 2
16
? ?? 1
2
?? 2
2
= 1
(1 -
?? 2
25
) (1 +
?? 2
16
) = 1
? 2 +
?? 2
16
-
?? 2
25
-
?? 2
400
= 1
?
9?? 2
400
=
?? 4
400
?? 2
= 9
?? 2
9
+
?? 2
25
= 1
?? 2
16
-
?? 2
9
= 0
?? 1
v
1 -
9
25
?? 1
=
4
5
Focii : - ( 0, ±4) ( ±5,0)
ellipse passing through all four foci
?? 2
25
+
?? 2
16
= 1
?? =
v
1 -
16
25
=
3
5
Q4. Let the product of the focal distances of the point ?? ( ?? , ?? v ?? ) on the hyperbola
?? :
?? ?? ?? ?? -
?? ?? ?? ?? = ?? be 32 .
Let the length of the conjugate axis of ?? be ?? and the length of its latus rectum be q .
Then ?? ?? + ?? ?? is equal to
Ans: 120
Solution:
?? 2
?? 2
-
?? 2
?? 2
= 1 … ( 1)
P( 4,2v 3)
PS
1
· PS
2
= 32
|PS
1
- PS
2
| = 2a
P( 4,2v 3) lies on H
?
16
a
2
-
12
b
2
= 1
16?? 2
- 12?? 2
= ?? 2
?? 2
… ( 2)
|PS
1
- PS
2
|
2
= 4a
2
PS
1
2
+ PS
2
2
- 2PS
1
· PS
2
= 4a
2
( ae - 4)
2
+ 12 + ( ae + 4)
2
+ 12 - 64 = 4a
2
2a
2
e
2
- 8 = 4a
2
a
2
+ b
2
- 4 = 2a
2
b
2
- a
2
= 4
( 2) &( 3) ? 16( ?? 2
+ 4)- 12?? 2
= ?? 2
( ?? 2
+ 4)
? 16?? 2
+ 64 - 12?? 2
= ?? 4
+ 4?? 2
? ?? 4
= 64
? ?? 2
= 8
? b
2
= 12
p
2
+ q
2
= 4 b
2
+
4 b
4
a
2
= 120
Page 4
JEE Main Previous Year Questions
(2025): Hyperbola
Q1. Let one focus of the hyperbola ?? :
?? ?? ?? ?? -
?? ?? ?? ?? = ?? be at ( v ???? , ?? ) and the
corresponding directrix be ?? =
?? v ????
. If e and ?? respectively are the eccentricity and the
length of the latus rectum of H , then ?? ( ?? ?? + ?? ) is equal to:
A. 14
B. 15
C. 16
D. 12
Ans: C
Solution:
ae = v 10 and
a
e
=
9
10
? a
2
= 9 and e =
v 10
3
( ae)
2
= a
2
+ b
2
10 = 9 + b
2
? b
2
= 1
Now ?
2 b
2
a
=
2( 1)
3
= 9( e
2
+ l)
= 10 + 6
= 16
Q2. If the equation of the hyperbola with foci ( ?? , ?? ) and ( ?? , ?? ) is ?? ?? ?? - ?? ?? - ???? +
???? + ?? = ?? , then ?? + ?? + ?? is equal to ____ .
Ans: 141
Solution:
Equation of hyperbola is
( ?? - 6)
2
?? 2
-
( ?? - 2)
2
4 - ?? 2
= 1
? ( 4 - ?? 2
) ( ?? - 6)
2
- ?? 2
( ?? - 2)
2
= ?? 2
( 4 - ?? 2
)
comparing with 3?? 2
- ?? 2
- ???? + ???? + ?? = 0, we get a
2
= 1 and ?? = 36, ?? = 4 and ?? = 101
? a + ß + ? = 141
Q3. Let ?? ?? and ?? ?? be the eccentricities of the ellipse
?? ?? ?? ?? +
?? ?? ????
= ?? and the hyperbola
?? ?? ????
-
?? ?? ?? ?? = ?? , respectively. If ?? < ?? and ?? ?? ?? ?? = ?? , then the eccentricity of the ellipse
having its axes along the coordinate axes and passing through all four foci (two of the
ellipse and two of the hyperbola) is :
A.
4
5
B.
3
5
C.
v 7
4
D.
v 3
2
Ans: B
Solution:
?? 1
2
= 1 -
?? 2
25
?? 2
2
= 1 -
?? 2
16
? ?? 1
2
?? 2
2
= 1
(1 -
?? 2
25
) (1 +
?? 2
16
) = 1
? 2 +
?? 2
16
-
?? 2
25
-
?? 2
400
= 1
?
9?? 2
400
=
?? 4
400
?? 2
= 9
?? 2
9
+
?? 2
25
= 1
?? 2
16
-
?? 2
9
= 0
?? 1
v
1 -
9
25
?? 1
=
4
5
Focii : - ( 0, ±4) ( ±5,0)
ellipse passing through all four foci
?? 2
25
+
?? 2
16
= 1
?? =
v
1 -
16
25
=
3
5
Q4. Let the product of the focal distances of the point ?? ( ?? , ?? v ?? ) on the hyperbola
?? :
?? ?? ?? ?? -
?? ?? ?? ?? = ?? be 32 .
Let the length of the conjugate axis of ?? be ?? and the length of its latus rectum be q .
Then ?? ?? + ?? ?? is equal to
Ans: 120
Solution:
?? 2
?? 2
-
?? 2
?? 2
= 1 … ( 1)
P( 4,2v 3)
PS
1
· PS
2
= 32
|PS
1
- PS
2
| = 2a
P( 4,2v 3) lies on H
?
16
a
2
-
12
b
2
= 1
16?? 2
- 12?? 2
= ?? 2
?? 2
… ( 2)
|PS
1
- PS
2
|
2
= 4a
2
PS
1
2
+ PS
2
2
- 2PS
1
· PS
2
= 4a
2
( ae - 4)
2
+ 12 + ( ae + 4)
2
+ 12 - 64 = 4a
2
2a
2
e
2
- 8 = 4a
2
a
2
+ b
2
- 4 = 2a
2
b
2
- a
2
= 4
( 2) &( 3) ? 16( ?? 2
+ 4)- 12?? 2
= ?? 2
( ?? 2
+ 4)
? 16?? 2
+ 64 - 12?? 2
= ?? 4
+ 4?? 2
? ?? 4
= 64
? ?? 2
= 8
? b
2
= 12
p
2
+ q
2
= 4 b
2
+
4 b
4
a
2
= 120
Q5. Let the sum of the focal distances of the point ?? ( ?? , ?? ) on the hyperbola ?? :
?? ?? ?? ?? -
?? ?? ?? ?? = ?? be ?? v
?? ?? . If for ?? , the length of the latus rectum is ?? and the product of the focal
distances of the point P is m , then ?? ?? ?? + ?? ?? is equal to
A. 184
B. 186
C. 185
D. 187
Ans: C
Solution:
???? + ?? + ???? - ?? = 8
v
5
3
2???? = 8
v
5
3
2?? × 4 = 8
v
5
3
?? =
v
5
3
?? 2
= ?? 2
((
v 5
3
)
2
- 1)
?? 2
=
2
3
?? 2
16
?? 2
-
9
?? 2
= 1
and ?? 2
=
2
3
?? 2
? ?? 2
=
5
2
?? 2
=
5
3
Now,
Page 5
JEE Main Previous Year Questions
(2025): Hyperbola
Q1. Let one focus of the hyperbola ?? :
?? ?? ?? ?? -
?? ?? ?? ?? = ?? be at ( v ???? , ?? ) and the
corresponding directrix be ?? =
?? v ????
. If e and ?? respectively are the eccentricity and the
length of the latus rectum of H , then ?? ( ?? ?? + ?? ) is equal to:
A. 14
B. 15
C. 16
D. 12
Ans: C
Solution:
ae = v 10 and
a
e
=
9
10
? a
2
= 9 and e =
v 10
3
( ae)
2
= a
2
+ b
2
10 = 9 + b
2
? b
2
= 1
Now ?
2 b
2
a
=
2( 1)
3
= 9( e
2
+ l)
= 10 + 6
= 16
Q2. If the equation of the hyperbola with foci ( ?? , ?? ) and ( ?? , ?? ) is ?? ?? ?? - ?? ?? - ???? +
???? + ?? = ?? , then ?? + ?? + ?? is equal to ____ .
Ans: 141
Solution:
Equation of hyperbola is
( ?? - 6)
2
?? 2
-
( ?? - 2)
2
4 - ?? 2
= 1
? ( 4 - ?? 2
) ( ?? - 6)
2
- ?? 2
( ?? - 2)
2
= ?? 2
( 4 - ?? 2
)
comparing with 3?? 2
- ?? 2
- ???? + ???? + ?? = 0, we get a
2
= 1 and ?? = 36, ?? = 4 and ?? = 101
? a + ß + ? = 141
Q3. Let ?? ?? and ?? ?? be the eccentricities of the ellipse
?? ?? ?? ?? +
?? ?? ????
= ?? and the hyperbola
?? ?? ????
-
?? ?? ?? ?? = ?? , respectively. If ?? < ?? and ?? ?? ?? ?? = ?? , then the eccentricity of the ellipse
having its axes along the coordinate axes and passing through all four foci (two of the
ellipse and two of the hyperbola) is :
A.
4
5
B.
3
5
C.
v 7
4
D.
v 3
2
Ans: B
Solution:
?? 1
2
= 1 -
?? 2
25
?? 2
2
= 1 -
?? 2
16
? ?? 1
2
?? 2
2
= 1
(1 -
?? 2
25
) (1 +
?? 2
16
) = 1
? 2 +
?? 2
16
-
?? 2
25
-
?? 2
400
= 1
?
9?? 2
400
=
?? 4
400
?? 2
= 9
?? 2
9
+
?? 2
25
= 1
?? 2
16
-
?? 2
9
= 0
?? 1
v
1 -
9
25
?? 1
=
4
5
Focii : - ( 0, ±4) ( ±5,0)
ellipse passing through all four foci
?? 2
25
+
?? 2
16
= 1
?? =
v
1 -
16
25
=
3
5
Q4. Let the product of the focal distances of the point ?? ( ?? , ?? v ?? ) on the hyperbola
?? :
?? ?? ?? ?? -
?? ?? ?? ?? = ?? be 32 .
Let the length of the conjugate axis of ?? be ?? and the length of its latus rectum be q .
Then ?? ?? + ?? ?? is equal to
Ans: 120
Solution:
?? 2
?? 2
-
?? 2
?? 2
= 1 … ( 1)
P( 4,2v 3)
PS
1
· PS
2
= 32
|PS
1
- PS
2
| = 2a
P( 4,2v 3) lies on H
?
16
a
2
-
12
b
2
= 1
16?? 2
- 12?? 2
= ?? 2
?? 2
… ( 2)
|PS
1
- PS
2
|
2
= 4a
2
PS
1
2
+ PS
2
2
- 2PS
1
· PS
2
= 4a
2
( ae - 4)
2
+ 12 + ( ae + 4)
2
+ 12 - 64 = 4a
2
2a
2
e
2
- 8 = 4a
2
a
2
+ b
2
- 4 = 2a
2
b
2
- a
2
= 4
( 2) &( 3) ? 16( ?? 2
+ 4)- 12?? 2
= ?? 2
( ?? 2
+ 4)
? 16?? 2
+ 64 - 12?? 2
= ?? 4
+ 4?? 2
? ?? 4
= 64
? ?? 2
= 8
? b
2
= 12
p
2
+ q
2
= 4 b
2
+
4 b
4
a
2
= 120
Q5. Let the sum of the focal distances of the point ?? ( ?? , ?? ) on the hyperbola ?? :
?? ?? ?? ?? -
?? ?? ?? ?? = ?? be ?? v
?? ?? . If for ?? , the length of the latus rectum is ?? and the product of the focal
distances of the point P is m , then ?? ?? ?? + ?? ?? is equal to
A. 184
B. 186
C. 185
D. 187
Ans: C
Solution:
???? + ?? + ???? - ?? = 8
v
5
3
2???? = 8
v
5
3
2?? × 4 = 8
v
5
3
?? =
v
5
3
?? 2
= ?? 2
((
v 5
3
)
2
- 1)
?? 2
=
2
3
?? 2
16
?? 2
-
9
?? 2
= 1
and ?? 2
=
2
3
?? 2
? ?? 2
=
5
2
?? 2
=
5
3
Now,
l =
2?? 2
?? l
2
=
4?? 4
?? 2
9l
2
= 36 ×
25
9 × 5
× 2
9l
2
= 40
?? = ( ???? + ?? ) ( ???? - ?? )
?? = ?? 2
?? 2
- ?? 2
=
5
3
× 16 -
5
2
=
145
6
= 6?? = 145
9l
2
+ 6?? 40 + 145 = 185
option (3)
Q6. Consider the hyperbola
?? ?? ?? ?? -
?? ?? ?? ?? = ?? having one of its focus at ?? ( -?? , ?? ) . If the latus
ractum through its other focus subtends a right angle at P and ?? ?? ?? ?? = ?? v ?? -
?? , ?? , ?? ? N.
Ans: 1944
Solution:
f 1 = (-ae,0) = P(-3,0)
? ae = 3
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