NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics: Questions 419  422 of 2320
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Question number: 419
» Kinematics » Uniform and NonUniform Motion
Question
A fire man has to carry an injured person of mass 30 kg from the top of a building with the help of the rope which can withstand a load of 150 kg. The acceleration of the
Fireman if his mass is 50 kg, will be
Choices
Choice (4)  Response  

a.  8.575 m/s ^{2}  
b.  9.8 m/s ^{2}  
c.  2.63 m/s ^{2}  
d.  17.97 m/s ^{2} 
Question number: 420
» Electrostatics » Forces between Two Point Charges
Question
Assertion (Ꭺ)
Direction of electric field at a point signifies direction of force experienced by a point charge placed at that point.
Reason (Ꭱ)
Electric field is a vector quantity.
Choices
Choice (4)  Response  

a.  Ꭺ is false but Ꭱ is true  
b.  Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ  
c.  Ꭺ is true but Ꭱ is false  
d.  Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ 
Question number: 421
» Laws of Motion » Force and Inertia
Question
A body of mass m tied at the end of a string of length i is projected with velocity , at what height will it leave the circular path –
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 422
» Electrostatics » Equipotential Surfaces
Question
A uniform electric field pointing in positive x  direction exists in a region. Let A be the origin, B be the point on the x  axis at x =+1 cm and C be the point on the y  axis at y =+1 cm. Then the potentials at the points A, B and C satisfy
Choices
Choice (4)  Response  

a.  V _{A} < V _{C}  
b.  V _{A} < V _{B}  
c.  V _{A} > V _{C}  
d.  V _{A} > V _{B} 