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JEE Exam  >  JEE Notes  >  BITSAT Mock Tests Series & Past Year Papers 2025  >  BITSAT Past Year Paper- 2023

BITSAT Past Year Paper- 2023 | BITSAT Mock Tests Series & Past Year Papers 2025 - JEE PDF Download

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 Page 1


Q u e s t i o n 	 1
A n 	 o b j e c t 	 m o v e s 	 w i t h 	 s p e e d 	 v
1
, v
2
	 a n d 	 v
3
	 a l o n g 	 a 	 l i n e 	 s e g m e n t 	 A B , B C
a n d 	 C D 	 r e s p e c t i v e l y 	 a s 	 s h o w n 	 i n 	 f i g u r e . 	 W h e r e 	 A B = B C 	 a n d 	 A D = 3 A B ,
t h e n 	 a v e r a g e 	 s p e e d 	 o f 	 t h e 	 o b j e c t 	 w i l l 	 b e :
O p t i o n s :
A . 	
v
1
v
2
v
3
3 ( v
1
v
2
+ v
2
v
3
+ v
3
v
1
)
B . 	
3 v
1
v
2
v
3
( v
1
v
2
+ v
2
v
3
+ v
3
v
1
)
C . 	
( r
2
+ r
2
+ r
3
)
3
D . 	
( v
1
+ v
2
+ v
3
)
3 v
1
v
2
v
3
A n s w e r : 	 B
S o l u t i o n :
S o l u t i o n :
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 2
T h e 	 e f f e c t 	 o f 	 i n c r e a s e 	 i n 	 t e m p e r a t u r e 	 o n 	 t h e 	 n u m b e r 	 o f 	 e l e c t r o n s 	 i n
BITSAT - Paper 2023 Shift 1
Solved Paper
Page 2


Q u e s t i o n 	 1
A n 	 o b j e c t 	 m o v e s 	 w i t h 	 s p e e d 	 v
1
, v
2
	 a n d 	 v
3
	 a l o n g 	 a 	 l i n e 	 s e g m e n t 	 A B , B C
a n d 	 C D 	 r e s p e c t i v e l y 	 a s 	 s h o w n 	 i n 	 f i g u r e . 	 W h e r e 	 A B = B C 	 a n d 	 A D = 3 A B ,
t h e n 	 a v e r a g e 	 s p e e d 	 o f 	 t h e 	 o b j e c t 	 w i l l 	 b e :
O p t i o n s :
A . 	
v
1
v
2
v
3
3 ( v
1
v
2
+ v
2
v
3
+ v
3
v
1
)
B . 	
3 v
1
v
2
v
3
( v
1
v
2
+ v
2
v
3
+ v
3
v
1
)
C . 	
( r
2
+ r
2
+ r
3
)
3
D . 	
( v
1
+ v
2
+ v
3
)
3 v
1
v
2
v
3
A n s w e r : 	 B
S o l u t i o n :
S o l u t i o n :
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 2
T h e 	 e f f e c t 	 o f 	 i n c r e a s e 	 i n 	 t e m p e r a t u r e 	 o n 	 t h e 	 n u m b e r 	 o f 	 e l e c t r o n s 	 i n
BITSAT - Paper 2023 Shift 1
Solved Paper
c o n d u c t i o n 	 b a n d 	 ( n
e
) 	 a n d 	 r e s i s t a n c e 	 o f 	 a 	 s e m i c o n d u c t o r 	 w i l l 	 b e 	 a s :
O p t i o n s :
A . 	 B o t h 	 n
e
	 a n d 	 r e s i s t a n c e 	 d e c r e a s e
B . 	 B o t h 	 n
e
	 a n d 	 r e s i s t a n c e 	 i n c r e a s e
C . 	 n
e
	 i n c r e a s e s , 	 r e s i s t a n c e 	 d e c r e a s e s
D . 	 n
e
	 d e c r e a s e s , 	 r e s i s t a n c e 	 i n c r e a s e s
A n s w e r : 	 C
S o l u t i o n :
S o l u t i o n :
W h e n 	 t e m p e r a t u r e 	 i n c r e a s e s , 	 m o r e 	 e l e c t r o n s 	 e x c i t e 	 t o 	 c o n d u c t i o n 	 b a n d 	 a n d 	 h e n c e 	 c o n d u c t i v i t y 	 i n c r e a s e s , 	 t h e r e f o r e
r e s i s t a n c e 	 d e c r e a s e s .
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 3
A 	 r a d i o - a c t i v e 	 m a t e r i a l 	 i s 	 r e d u c e d 	 t o 	 1 / 8 	 o f 	 i t s 	 o r i g i n a l 	 a m o u n t 	 i n 	 3
d a y s . 	 I f 	 8 × 1 0
- 3
k g 	 o f 	 t h e 	 m a t e r i a l 	 i s 	 l e f t 	 a f t e r 	 5 	 d a y s . 	 T h e 	 i n i t i a l 	 a m o u n t
o f 	 t h e 	 m a t e r i a l 	 i s
O p t i o n s :
A . 	 7 0 0 	 g m
B . 	 9 0 0 	 g m
C . 	 4 7 5 	 g m
D . 	 2 5 6 	 g m
A n s w e r : 	 D
S o l u t i o n :
S o l u t i o n :
Page 3


Q u e s t i o n 	 1
A n 	 o b j e c t 	 m o v e s 	 w i t h 	 s p e e d 	 v
1
, v
2
	 a n d 	 v
3
	 a l o n g 	 a 	 l i n e 	 s e g m e n t 	 A B , B C
a n d 	 C D 	 r e s p e c t i v e l y 	 a s 	 s h o w n 	 i n 	 f i g u r e . 	 W h e r e 	 A B = B C 	 a n d 	 A D = 3 A B ,
t h e n 	 a v e r a g e 	 s p e e d 	 o f 	 t h e 	 o b j e c t 	 w i l l 	 b e :
O p t i o n s :
A . 	
v
1
v
2
v
3
3 ( v
1
v
2
+ v
2
v
3
+ v
3
v
1
)
B . 	
3 v
1
v
2
v
3
( v
1
v
2
+ v
2
v
3
+ v
3
v
1
)
C . 	
( r
2
+ r
2
+ r
3
)
3
D . 	
( v
1
+ v
2
+ v
3
)
3 v
1
v
2
v
3
A n s w e r : 	 B
S o l u t i o n :
S o l u t i o n :
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 2
T h e 	 e f f e c t 	 o f 	 i n c r e a s e 	 i n 	 t e m p e r a t u r e 	 o n 	 t h e 	 n u m b e r 	 o f 	 e l e c t r o n s 	 i n
BITSAT - Paper 2023 Shift 1
Solved Paper
c o n d u c t i o n 	 b a n d 	 ( n
e
) 	 a n d 	 r e s i s t a n c e 	 o f 	 a 	 s e m i c o n d u c t o r 	 w i l l 	 b e 	 a s :
O p t i o n s :
A . 	 B o t h 	 n
e
	 a n d 	 r e s i s t a n c e 	 d e c r e a s e
B . 	 B o t h 	 n
e
	 a n d 	 r e s i s t a n c e 	 i n c r e a s e
C . 	 n
e
	 i n c r e a s e s , 	 r e s i s t a n c e 	 d e c r e a s e s
D . 	 n
e
	 d e c r e a s e s , 	 r e s i s t a n c e 	 i n c r e a s e s
A n s w e r : 	 C
S o l u t i o n :
S o l u t i o n :
W h e n 	 t e m p e r a t u r e 	 i n c r e a s e s , 	 m o r e 	 e l e c t r o n s 	 e x c i t e 	 t o 	 c o n d u c t i o n 	 b a n d 	 a n d 	 h e n c e 	 c o n d u c t i v i t y 	 i n c r e a s e s , 	 t h e r e f o r e
r e s i s t a n c e 	 d e c r e a s e s .
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 3
A 	 r a d i o - a c t i v e 	 m a t e r i a l 	 i s 	 r e d u c e d 	 t o 	 1 / 8 	 o f 	 i t s 	 o r i g i n a l 	 a m o u n t 	 i n 	 3
d a y s . 	 I f 	 8 × 1 0
- 3
k g 	 o f 	 t h e 	 m a t e r i a l 	 i s 	 l e f t 	 a f t e r 	 5 	 d a y s . 	 T h e 	 i n i t i a l 	 a m o u n t
o f 	 t h e 	 m a t e r i a l 	 i s
O p t i o n s :
A . 	 7 0 0 	 g m
B . 	 9 0 0 	 g m
C . 	 4 7 5 	 g m
D . 	 2 5 6 	 g m
A n s w e r : 	 D
S o l u t i o n :
S o l u t i o n :
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 4
A 	 1 2 . 5 e V 	 e l e c t r o n 	 b e a m 	 i s 	 u s e d 	 t o 	 b o m b a r d 	 g a s e o u s 	 h y d r o g e n 	 a t 	 r o o m
t e m p e r a t u r e . 	 T h e 	 n u m b e r 	 o f 	 s p e c t r a l 	 l i n e s 	 e m i t t e d 	 w i l l 	 b e :
O p t i o n s :
A . 	 2
B . 	 1
C . 	 3
D . 	 4
A n s w e r : 	 C
S o l u t i o n :
S o l u t i o n :
I f 	 w e 	 a s s u m e 	 e l e c t r o n 	 i n 	 h y d r o g e n 	 a t o m 	 t a k e s 	 e n e r g y 	 1 2 . 0 9 e V 	 f r o m 	 t h e 	 i n c o m i n g 	 r a d i a t i o n , 	 t h e 	 m a x i m u m 	 e x c i t e d 	 s t a t e
o f 	 e l e c t r o n 	 w i l l 	 b e 	 n = 3 . 	 S o , 	 n u m b e r 	 o f 	 s p e c t r a l 	 l i n e s 	 i s 	
H e r e 	 w e 	 a s s u m e 	 s o m e 	 p a r t 	 o f 	 e n e r g y 	 1 2 . 5 e V 	 - 1 2 . 0 9 e V = 0 . 4 1 e V 	 g e t 	 l o s t 	 d u e 	 t o 	 c o l l i s i o n .
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 5
I f 	 1 0 0 0 	 d r o p l e t s 	 o f 	 w a t e r 	 o f 	 s u r f a c e 	 t e n s i o n 	 0 . 0 7 	 N / m . 	 h a v i n g 	 s a m e
r a d i u s 	 1 m m 	 e a c h , 	 c o m b i n e 	 t o 	 f r o m 	 a 	 s i n g l e 	 d r o p . 	 I n 	 t h e 	 p r o c e s s 	 t h e
r e l e a s e d 	 s u r f a c e 	 e n e r g y 	 i s -
	 T a k e 	 p =
2 2
7
O p t i o n s :
A . 	 7 . 9 2 × 1 0
- 6
J
B . 	 7 . 9 2 × 1 0
- 4
J
( )
Page 4


Q u e s t i o n 	 1
A n 	 o b j e c t 	 m o v e s 	 w i t h 	 s p e e d 	 v
1
, v
2
	 a n d 	 v
3
	 a l o n g 	 a 	 l i n e 	 s e g m e n t 	 A B , B C
a n d 	 C D 	 r e s p e c t i v e l y 	 a s 	 s h o w n 	 i n 	 f i g u r e . 	 W h e r e 	 A B = B C 	 a n d 	 A D = 3 A B ,
t h e n 	 a v e r a g e 	 s p e e d 	 o f 	 t h e 	 o b j e c t 	 w i l l 	 b e :
O p t i o n s :
A . 	
v
1
v
2
v
3
3 ( v
1
v
2
+ v
2
v
3
+ v
3
v
1
)
B . 	
3 v
1
v
2
v
3
( v
1
v
2
+ v
2
v
3
+ v
3
v
1
)
C . 	
( r
2
+ r
2
+ r
3
)
3
D . 	
( v
1
+ v
2
+ v
3
)
3 v
1
v
2
v
3
A n s w e r : 	 B
S o l u t i o n :
S o l u t i o n :
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 2
T h e 	 e f f e c t 	 o f 	 i n c r e a s e 	 i n 	 t e m p e r a t u r e 	 o n 	 t h e 	 n u m b e r 	 o f 	 e l e c t r o n s 	 i n
BITSAT - Paper 2023 Shift 1
Solved Paper
c o n d u c t i o n 	 b a n d 	 ( n
e
) 	 a n d 	 r e s i s t a n c e 	 o f 	 a 	 s e m i c o n d u c t o r 	 w i l l 	 b e 	 a s :
O p t i o n s :
A . 	 B o t h 	 n
e
	 a n d 	 r e s i s t a n c e 	 d e c r e a s e
B . 	 B o t h 	 n
e
	 a n d 	 r e s i s t a n c e 	 i n c r e a s e
C . 	 n
e
	 i n c r e a s e s , 	 r e s i s t a n c e 	 d e c r e a s e s
D . 	 n
e
	 d e c r e a s e s , 	 r e s i s t a n c e 	 i n c r e a s e s
A n s w e r : 	 C
S o l u t i o n :
S o l u t i o n :
W h e n 	 t e m p e r a t u r e 	 i n c r e a s e s , 	 m o r e 	 e l e c t r o n s 	 e x c i t e 	 t o 	 c o n d u c t i o n 	 b a n d 	 a n d 	 h e n c e 	 c o n d u c t i v i t y 	 i n c r e a s e s , 	 t h e r e f o r e
r e s i s t a n c e 	 d e c r e a s e s .
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 3
A 	 r a d i o - a c t i v e 	 m a t e r i a l 	 i s 	 r e d u c e d 	 t o 	 1 / 8 	 o f 	 i t s 	 o r i g i n a l 	 a m o u n t 	 i n 	 3
d a y s . 	 I f 	 8 × 1 0
- 3
k g 	 o f 	 t h e 	 m a t e r i a l 	 i s 	 l e f t 	 a f t e r 	 5 	 d a y s . 	 T h e 	 i n i t i a l 	 a m o u n t
o f 	 t h e 	 m a t e r i a l 	 i s
O p t i o n s :
A . 	 7 0 0 	 g m
B . 	 9 0 0 	 g m
C . 	 4 7 5 	 g m
D . 	 2 5 6 	 g m
A n s w e r : 	 D
S o l u t i o n :
S o l u t i o n :
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 4
A 	 1 2 . 5 e V 	 e l e c t r o n 	 b e a m 	 i s 	 u s e d 	 t o 	 b o m b a r d 	 g a s e o u s 	 h y d r o g e n 	 a t 	 r o o m
t e m p e r a t u r e . 	 T h e 	 n u m b e r 	 o f 	 s p e c t r a l 	 l i n e s 	 e m i t t e d 	 w i l l 	 b e :
O p t i o n s :
A . 	 2
B . 	 1
C . 	 3
D . 	 4
A n s w e r : 	 C
S o l u t i o n :
S o l u t i o n :
I f 	 w e 	 a s s u m e 	 e l e c t r o n 	 i n 	 h y d r o g e n 	 a t o m 	 t a k e s 	 e n e r g y 	 1 2 . 0 9 e V 	 f r o m 	 t h e 	 i n c o m i n g 	 r a d i a t i o n , 	 t h e 	 m a x i m u m 	 e x c i t e d 	 s t a t e
o f 	 e l e c t r o n 	 w i l l 	 b e 	 n = 3 . 	 S o , 	 n u m b e r 	 o f 	 s p e c t r a l 	 l i n e s 	 i s 	
H e r e 	 w e 	 a s s u m e 	 s o m e 	 p a r t 	 o f 	 e n e r g y 	 1 2 . 5 e V 	 - 1 2 . 0 9 e V = 0 . 4 1 e V 	 g e t 	 l o s t 	 d u e 	 t o 	 c o l l i s i o n .
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 5
I f 	 1 0 0 0 	 d r o p l e t s 	 o f 	 w a t e r 	 o f 	 s u r f a c e 	 t e n s i o n 	 0 . 0 7 	 N / m . 	 h a v i n g 	 s a m e
r a d i u s 	 1 m m 	 e a c h , 	 c o m b i n e 	 t o 	 f r o m 	 a 	 s i n g l e 	 d r o p . 	 I n 	 t h e 	 p r o c e s s 	 t h e
r e l e a s e d 	 s u r f a c e 	 e n e r g y 	 i s -
	 T a k e 	 p =
2 2
7
O p t i o n s :
A . 	 7 . 9 2 × 1 0
- 6
J
B . 	 7 . 9 2 × 1 0
- 4
J
( )
C . 	 9 . 6 8 × 1 0
- 4
J
D . 	 8 . 8 × 1 0
- 5
J
A n s w e r : 	 B
S o l u t i o n :
S o l u t i o n :
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 6
T h e 	 f o r c e 	 b e t w e e n 	 t w o 	 s m a l l 	 c h a r g e d 	 s p h e r e s 	 h a v i n g 	 c h a r g e s 	 o f
1 × 1 0
- 7
C 	 a n d 	 2 × 1 0
- 7
C 	 p l a c e d 	 2 0 c m 	 a p a r t 	 i n 	 a i r 	 i s
O p t i o n s :
A . 	 4 . 5 × 1 0
- 2
N
B . 	 4 . 5 × 1 0
- 3
N
C . 	 5 . 4 × 1 0
- 2
N
D . 	 5 . 4 × 1 0
- 3
N
A n s w e r : 	 B
S o l u t i o n :
S o l u t i o n :
Page 5


Q u e s t i o n 	 1
A n 	 o b j e c t 	 m o v e s 	 w i t h 	 s p e e d 	 v
1
, v
2
	 a n d 	 v
3
	 a l o n g 	 a 	 l i n e 	 s e g m e n t 	 A B , B C
a n d 	 C D 	 r e s p e c t i v e l y 	 a s 	 s h o w n 	 i n 	 f i g u r e . 	 W h e r e 	 A B = B C 	 a n d 	 A D = 3 A B ,
t h e n 	 a v e r a g e 	 s p e e d 	 o f 	 t h e 	 o b j e c t 	 w i l l 	 b e :
O p t i o n s :
A . 	
v
1
v
2
v
3
3 ( v
1
v
2
+ v
2
v
3
+ v
3
v
1
)
B . 	
3 v
1
v
2
v
3
( v
1
v
2
+ v
2
v
3
+ v
3
v
1
)
C . 	
( r
2
+ r
2
+ r
3
)
3
D . 	
( v
1
+ v
2
+ v
3
)
3 v
1
v
2
v
3
A n s w e r : 	 B
S o l u t i o n :
S o l u t i o n :
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 2
T h e 	 e f f e c t 	 o f 	 i n c r e a s e 	 i n 	 t e m p e r a t u r e 	 o n 	 t h e 	 n u m b e r 	 o f 	 e l e c t r o n s 	 i n
BITSAT - Paper 2023 Shift 1
Solved Paper
c o n d u c t i o n 	 b a n d 	 ( n
e
) 	 a n d 	 r e s i s t a n c e 	 o f 	 a 	 s e m i c o n d u c t o r 	 w i l l 	 b e 	 a s :
O p t i o n s :
A . 	 B o t h 	 n
e
	 a n d 	 r e s i s t a n c e 	 d e c r e a s e
B . 	 B o t h 	 n
e
	 a n d 	 r e s i s t a n c e 	 i n c r e a s e
C . 	 n
e
	 i n c r e a s e s , 	 r e s i s t a n c e 	 d e c r e a s e s
D . 	 n
e
	 d e c r e a s e s , 	 r e s i s t a n c e 	 i n c r e a s e s
A n s w e r : 	 C
S o l u t i o n :
S o l u t i o n :
W h e n 	 t e m p e r a t u r e 	 i n c r e a s e s , 	 m o r e 	 e l e c t r o n s 	 e x c i t e 	 t o 	 c o n d u c t i o n 	 b a n d 	 a n d 	 h e n c e 	 c o n d u c t i v i t y 	 i n c r e a s e s , 	 t h e r e f o r e
r e s i s t a n c e 	 d e c r e a s e s .
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 3
A 	 r a d i o - a c t i v e 	 m a t e r i a l 	 i s 	 r e d u c e d 	 t o 	 1 / 8 	 o f 	 i t s 	 o r i g i n a l 	 a m o u n t 	 i n 	 3
d a y s . 	 I f 	 8 × 1 0
- 3
k g 	 o f 	 t h e 	 m a t e r i a l 	 i s 	 l e f t 	 a f t e r 	 5 	 d a y s . 	 T h e 	 i n i t i a l 	 a m o u n t
o f 	 t h e 	 m a t e r i a l 	 i s
O p t i o n s :
A . 	 7 0 0 	 g m
B . 	 9 0 0 	 g m
C . 	 4 7 5 	 g m
D . 	 2 5 6 	 g m
A n s w e r : 	 D
S o l u t i o n :
S o l u t i o n :
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 4
A 	 1 2 . 5 e V 	 e l e c t r o n 	 b e a m 	 i s 	 u s e d 	 t o 	 b o m b a r d 	 g a s e o u s 	 h y d r o g e n 	 a t 	 r o o m
t e m p e r a t u r e . 	 T h e 	 n u m b e r 	 o f 	 s p e c t r a l 	 l i n e s 	 e m i t t e d 	 w i l l 	 b e :
O p t i o n s :
A . 	 2
B . 	 1
C . 	 3
D . 	 4
A n s w e r : 	 C
S o l u t i o n :
S o l u t i o n :
I f 	 w e 	 a s s u m e 	 e l e c t r o n 	 i n 	 h y d r o g e n 	 a t o m 	 t a k e s 	 e n e r g y 	 1 2 . 0 9 e V 	 f r o m 	 t h e 	 i n c o m i n g 	 r a d i a t i o n , 	 t h e 	 m a x i m u m 	 e x c i t e d 	 s t a t e
o f 	 e l e c t r o n 	 w i l l 	 b e 	 n = 3 . 	 S o , 	 n u m b e r 	 o f 	 s p e c t r a l 	 l i n e s 	 i s 	
H e r e 	 w e 	 a s s u m e 	 s o m e 	 p a r t 	 o f 	 e n e r g y 	 1 2 . 5 e V 	 - 1 2 . 0 9 e V = 0 . 4 1 e V 	 g e t 	 l o s t 	 d u e 	 t o 	 c o l l i s i o n .
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 5
I f 	 1 0 0 0 	 d r o p l e t s 	 o f 	 w a t e r 	 o f 	 s u r f a c e 	 t e n s i o n 	 0 . 0 7 	 N / m . 	 h a v i n g 	 s a m e
r a d i u s 	 1 m m 	 e a c h , 	 c o m b i n e 	 t o 	 f r o m 	 a 	 s i n g l e 	 d r o p . 	 I n 	 t h e 	 p r o c e s s 	 t h e
r e l e a s e d 	 s u r f a c e 	 e n e r g y 	 i s -
	 T a k e 	 p =
2 2
7
O p t i o n s :
A . 	 7 . 9 2 × 1 0
- 6
J
B . 	 7 . 9 2 × 1 0
- 4
J
( )
C . 	 9 . 6 8 × 1 0
- 4
J
D . 	 8 . 8 × 1 0
- 5
J
A n s w e r : 	 B
S o l u t i o n :
S o l u t i o n :
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 6
T h e 	 f o r c e 	 b e t w e e n 	 t w o 	 s m a l l 	 c h a r g e d 	 s p h e r e s 	 h a v i n g 	 c h a r g e s 	 o f
1 × 1 0
- 7
C 	 a n d 	 2 × 1 0
- 7
C 	 p l a c e d 	 2 0 c m 	 a p a r t 	 i n 	 a i r 	 i s
O p t i o n s :
A . 	 4 . 5 × 1 0
- 2
N
B . 	 4 . 5 × 1 0
- 3
N
C . 	 5 . 4 × 1 0
- 2
N
D . 	 5 . 4 × 1 0
- 3
N
A n s w e r : 	 B
S o l u t i o n :
S o l u t i o n :
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 7
T h e 	 w o r k 	 d o n e 	 i n 	 p l a c i n g 	 a 	 c h a r g e 	 o f 	 8 × 1 0
- 1 8
	 c o u l o m b 	 o n 	 a 	 c o n d e n s e r
o f 	 c a p a c i t y 	 1 0 0 	 m i c r o f a r a d 	 i s
O p t i o n s :
A . 	 3 . 1 × 1 0
- 2 6
	 j o u l e
B . 	 4 × 1 0
- 1 0
	 j o u l e
C . 	 3 2 × 1 0
- 3 2
	 j o u l e
D . 	 1 6 × 1 0
- 3 2
	 j o u l e
A n s w e r : 	 C
S o l u t i o n :
S o l u t i o n :
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Q u e s t i o n 	 8
T h e 	 r e s i s t a n c e 	 o f 	 a 	 w i r e 	 i s 	 5 ? . 	 I t ' s 	 n e w 	 r e s i s t a n c e 	 i n 	 o h m 	 i f 	 s t r e t c h e d 	 t o
5 	 t i m e s 	 o f 	 i t s 	 o r i g i n a l 	 l e n g t h 	 w i l l 	 b e 	 :
O p t i o n s :
A . 	 6 2 5
B . 	 5
C . 	 1 2 5
D . 	 2 5
A n s w e r : 	 C
S o l u t i o n :
S o l u t i o n :
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FAQs on BITSAT Past Year Paper- 2023 - BITSAT Mock Tests Series & Past Year Papers 2025 - JEE

1. What is BITSAT exam?
Ans. BITSAT is an entrance exam conducted by Birla Institute of Technology and Science (BITS) for admission to various undergraduate engineering courses offered by the institute.
2. How can I apply for BITSAT exam?
Ans. To apply for BITSAT exam, candidates need to fill out the online application form available on the official BITS website, upload necessary documents, and pay the application fee.
3. What is the exam pattern for BITSAT?
Ans. BITSAT exam consists of multiple-choice questions from Physics, Chemistry, Mathematics, English Proficiency, and Logical Reasoning. The duration of the exam is 3 hours.
4. What is the eligibility criteria for BITSAT exam?
Ans. Candidates must have passed 10+2 with Physics, Chemistry, and Mathematics as compulsory subjects to be eligible for BITSAT exam. They must also have a minimum aggregate of 75% in PCM.
5. How should I prepare for BITSAT exam?
Ans. To prepare for BITSAT exam, candidates should focus on understanding the concepts, practicing previous year papers, and taking mock tests to improve time management and accuracy. Additionally, referring to standard study materials and seeking guidance from teachers or coaching institutes can be helpful.
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Document Description: BITSAT Past Year Paper- 2023 for JEE 2024 is part of BITSAT Mock Tests Series & Past Year Papers 2025 preparation. The notes and questions for BITSAT Past Year Paper- 2023 have been prepared according to the JEE exam syllabus. Information about BITSAT Past Year Paper- 2023 covers topics like and BITSAT Past Year Paper- 2023 Example, for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for BITSAT Past Year Paper- 2023.
Introduction of BITSAT Past Year Paper- 2023 in English is available as part of our BITSAT Mock Tests Series & Past Year Papers 2025 for JEE & BITSAT Past Year Paper- 2023 in Hindi for BITSAT Mock Tests Series & Past Year Papers 2025 course. Download more important topics related with notes, lectures and mock test series for JEE Exam by signing up for free. JEE: BITSAT Past Year Paper- 2023 | BITSAT Mock Tests Series & Past Year Papers 2025 - JEE
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