NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics: Questions 298  302 of 2184
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Question number: 298
» Electrostatics » Electrostatic Potential Energy
Question
Three charges of equal value ^{′} q’ are placed at the vertices of an equilateral triangle. What is the net potential energy, if the side of equilateral triangle is l?
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Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 299
» Electrostatics » Coulomb's Law
Question
A total charge Q is broken in two parts Q _{1} and Q _{2} and they are placed at a distance R from each other. The maximum force of repulsion between them will occur, when
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Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 300
Question
Separation between the plates of a parallel plate capacitor is d and the area of each plate is A. When a slab of material of dielectric constant k and thickness t (t < d) is introduced between the plates, its capacitance becomes
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Choice (4)  Response  

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c. 


d. 


Question number: 301
» Electrostatics » Coulomb's Law
Question
Equal charges q are placed at the four corners A, B, C, D of a square of length a. The magnitude of the force on the charge at B will be
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Choice (4)  Response  

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Question number: 302
» 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} /4 and E _{A} = 100 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.  25 

b.  5 

c.  1.25 

d.  0.25 
