Rotational MotionMoment of Inertia (NEET Physics): Questions 23  27 of 34
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Question number: 23
» Rotational Motion » Moment of Inertia
Question
One circular ring and one circular disc, both are having the same mass and radius. The ratio of their moments of inertia about the axes passing through their centers and perpendicular to their planes, will be
Choices
Choice (4)  Response  

a.  1: 1  
b.  1: 2  
c.  2: 1  
d.  4: 1 
Question number: 24
» Rotational Motion » Moment of Inertia
Question
Moment of inertia of a disc about its own axis is I. its moment of inertia about a tangential axis in its plane is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 25
» Rotational Motion » Moment of Inertia
Question
Four thin rods of same mass M and same length l form a square as shown in figure. Moment of inertia of this system about an axis through center O and perpendicular to its plane is,
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 26
» Rotational Motion » Moment of Inertia
Question
From a uniform wire, two circular loops are made (i) P of radius r and (ii) Q of radius nr. If the moment of inertia of loop Q about an axis passing through its center and perpendicular to its plane is 125 times that of P about a similar axis, the value of n is (diameter of the wire is very much smaller than r or nr)
Choices
Choice (4)  Response  

a.  2  
b.  5  
c.  6  
d.  3 
Question number: 27
» Rotational Motion » Moment of Inertia
Assertion (Ꭺ)
If two different axes are at same distance from the centre of mass of a rigid body, then moment of inertia of the given rigid body about both the axes will always be the same.
Reason (Ꭱ)
From parallel axis theorem, where all terms have usual meaning.
Choices
Choice (4)  Response  

a.  Ꭺ is true but Ꭱ is false  
b.  Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ  
c.  Ꭺ is false but Ꭱ is true  
d.  Both Ꭺ and Ꭱ are false 