In column I, nature of collision between two bodies is given while in column II some physical quantity that may remain conserved during the collision is given. Match the entries of column I with the entries of column II 
ColumnI 
Column II 

(A) 
Elastic collision 
(p) 
Kinetic energy is conserved 

(B) 
Inelastic collision 
(q) 
Kinetic energy of the system may increase 

(C) 
Perfectly inelastic collision 
(r) 
Kinetic energy is not conserved 

(D) 
Collision between two cars moving at high speeds 
(s) 
Total energy is conserved 

CODES : 


A 
B 
C 
D 



a) 
A,d 
c,d 
c,d 
c,d 



b) 
c,d 
a,d 
c,d 
c,d 



c) 
c,d 
c,d 
a,d 
c,d 



d) 
c,d 
c,d 
c,d 
a,d 


In column I, nature of collision between two bodies is given while in column II some physical quantity that may remain conserved during the collision is given. Match the entries of column I with the entries of column II 
ColumnI 
Column II 

(A) 
Elastic collision 
(p) 
Kinetic energy is conserved 

(B) 
Inelastic collision 
(q) 
Kinetic energy of the system may increase 

(C) 
Perfectly inelastic collision 
(r) 
Kinetic energy is not conserved 

(D) 
Collision between two cars moving at high speeds 
(s) 
Total energy is conserved 

CODES : 


A 
B 
C 
D 



a) 
A,d 
c,d 
c,d 
c,d 



b) 
c,d 
a,d 
c,d 
c,d 



c) 
c,d 
c,d 
a,d 
c,d 



d) 
c,d 
c,d 
c,d 
a,d 


(a) In elastic collision, kinetic energy, momentum and total energy all remain conserved. In inelastic collision, kinetic energy is lost but other quantities remain conserved 
Object placed ………. of lens or mirror give infinite magnification. 

(a) 
at focus 
(b) 
at infinite distance 
(c) 
between F_{1} and2F_{1} 
(d) 
at 2F_{1} 
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