NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics: Questions 376  379 of 2184
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Question number: 376
» Kinematics » Uniform and NonUniform Motion
Question
A force of () N acted on a body of mass 10 kg. The displacement after 10 sec, if it starts from rest, will be 
Choices
Choice (4)  Response  

a.  70 m along with x axis 

b.  10 m along with x axis 

c.  50 m along with x axis 

d.  All of the above 

Question number: 377
» Laws of Motion » Force and Inertia
Question
The roadway bridge over a canal is the form of an arc of a circle of radius 10 m. What is the minimum speed with which a car can cross the bridge without leaving contact with the ground at the highest point (g = 9.8 m/s ^{2})
Choices
Choice (4)  Response  

a.  5.76 m/s 

b.  9.899 m/s 

c.  7.556 m/s 

d.  14.654 m/s 

Question number: 378
» Electrostatics » Electrostatic Potential Energy
Question
An electric dipole has the magnitude of its charge is q and its dipole moment is p. It is placed in a uniform electric field E. If its dipole moment is perpendicular to the direction of the field, the force on it and its potential energy are respectively
Choices
Choice (4)  Response  

a.  q. E and 

b.  q. E and 

c.  are zero 

d.  2q. E and minimum 

Question number: 379
» Rotational Motion » Angular Momentum
Question
Two rigid bodies A and B rotate with rotational kinetic energies E _{A} and E _{B} respectively. The moments of inertia of A and B about the axis of rotation are I _{A} and I _{B} respectively. If I _{A} = I _{B} /8 and E _{A} = 50 E _{B}, the ratio of angular momentum (L _{A}) of A to the angular momentum (L _{B}) of B is
Choices
Choice (4)  Response  

a.  0. . 25 

b.  2.5 

c.  5 

d.  1.25 
