The unit of power of a lens (P) is 

(a) 
cm 
(b) 
mm 
(c) 
diopter 
(d) 
hertz 
The unit of power of a lens (P) is 

(a) 
cm 
(b) 
mm 
(c) 
diopter 
(d) 
hertz 
A particle moves with constant speed on a circle in anticlockwise direction as shown in figure
Match column I and with Column II:
ColumnI 
Column II 

(A) 
Angular momentum of the particle about 
(p) 
Is minimum when the particle is at 

(B) 
Angular momentum of the particle about 
(q) 
Is maximum when the particle is at 

(C) 
Angular velocity of the particle about 
(r) 
Does not remain constant 

(D) 
Angular velocity of the particle about 
(s) 
Remains constant 

CODES : 


A 
B 
C 
D 



a) 
D 
b,c 
d 
a,c 



b) 
b 
c 
d 
a 



c) 
a 
b 
c 
d 



d) 
b,a 
c 
d 
a 


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