NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics: Questions 1968  1972 of 2320
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Question number: 1968
» Gravitation » Gravitational Potential
Question
The radius of the earth is R _{e} and the acceleration due to gravity at its surface is g. The work required in raising a body of mass m to a height h form the surface of the earth will be,
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 1969
» Rotational Motion » Values of Moments of Inertia
Question
Moment of inertia of a ring of mass M = 3 gm and radius R = 1 cm about an axis passing through its edge and parallel to its natural axis is,
Choices
Choice (4)  Response  

a.  100 gmcm ^{2}  
b.  1 gmcm ^{2}  
c.  10 gmcm ^{2}  
d.  6 gmcm ^{2} 
Question number: 1970
» Rotational Motion » Values of Moments of Inertia
Question
A long rod has a mass of 0.10 kg and length of 200 cm. The moment of inertia about an axis passing through the center and perpendicular to the length of rod will be,
Choices
Choice (4)  Response  

a.  0.0025 kgm ^{2}  
b.  0.033 kgm ^{2}  
c.  0.025 kgm ^{2}  
d.  0.0033 kgm ^{2} 
Question number: 1971
» Rotational Motion » Moment of Inertia
Question
Three rods each of length L and mass M are placed along X, Y and Z axis in such a way that one end of each of the rod is at the origin. The moment of inertia of this system about Z axis is,
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 1972
» Gravitation » Energy
Question
With what velocity must a body be thrown upward form the surface of the earth so that it reaches a height of 7 Re? Earth’s mass M = 6 ⨯ 10 ^{24} kg, radius R _{e} = 6.4 ⨯ 10 ^{6} m and G = 6.67 ⨯ 10 ^{11} Nm ^{2} /kg ^{2}.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
