NEET Physics: Questions 165  169 of 2098
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Question number: 165
» Kinematics » Uniformly Accelerated Motion
Assertion (Ꭺ)
In nonuniform circular motion, velocity vector and acceleration vector are not perpendicular to each other.
Reason (Ꭱ)
In nonuniform circular motion, particle has normal as well as tangential acceleration.
Choices
Choice (4)  Response  

a.  Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ 

b.  Ꭺ is true but Ꭱ is false 

c.  Ꭺ is false but Ꭱ is true 

d.  Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ 

Question number: 166
» Laws of Motion » Centripetal Force
Question
A body of mass 0.2 kg is moving on circular path of diameter 2.0 m at the rate of 10 revolutions per 31.4 seconds. The centripetal force acting on the body is 
Choices
Choice (4)  Response  

a.  2N 

b.  4N 

c.  0.4 N 

d.  0.8 N 

Question number: 167
» Kinematics » Average Speed and Instantaneous Velocity
Question
A car driver is negotiating a curve of radius 100 m with a speed of 18 km/hr. The angle through which he has to lean from the vertical will be –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 168
» Kinematics » Average Speed and Instantaneous Velocity
Question
A ball is thrown horizontally from a height of 20 m. It hits) the ground with a velocity three times its initial velocity. The initial velocity of ball is
Choices
Choice (4)  Response  

a.  3 m/s 

b.  5 m/s 

c.  7 m/s 

d.  2 m/s 

Question number: 169
» Kinematics » Average Speed and Instantaneous Velocity
Question
A particle is projected with a velocity u so that its horizontal range is twice the maximum height attained. The horizontal range is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

