NEET Physics: Questions 192  196 of 2098
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Question number: 192
» Kinematics » Average Speed and Instantaneous Velocity
Question
A particle is moving in a circular path with velocity varying with time as v = 1.5t+ 2t. If the radius of circular path is 2 cm. the angular acceleration at t = 2 sec will be –
Choices
Choice (4)  Response  

a.  400 rad/sec ^{2} 

b.  4 rad/sec ^{2} 

c.  0.4 rad/sec ^{2} 

d.  40 rad/sec ^{2} 

Question number: 193
» Laws of Motion » Centripetal Force
Question
The maximum speed at which a car can turn round a curve of 30 meter radius on a level road if the coefficient of friction between the tiers and the road is 0.4, will be –
Choices
Choice (4)  Response  

a.  11.76 m/s 

b.  17.84 m/s 

c.  9.02 m/s 

d.  10.84 m/s 

Question number: 194
» Kinematics » Motion in a Plane
Question
A particle is moving in a plane with a velocity given by, u = u0 i + (∞a cos ∞t) j, where i and j are unit vectors along x and yaxes respectively. If the particle is at the origin at t = 0, then its distance from the origin at time t = 3π/2∞ will be
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 195
» Kinematics » Average Speed and Instantaneous Velocity
Question
A particle moves in a circle of radius 10cm with a linear speed of 20m/s. The angular velocity will be –
Choices
Choice (4)  Response  

a.  25 rad/s 

b.  75 rad/s 

c.  50 rad/s 

d.  200 rad/s 

Question number: 196
» Kinematics » Motion in a Straight Line
Question
If t _{1} be the time taken by a body to clear the top of a building and be the time spent in air, then t _{2}: t _{1} will be 
Choices
Choice (4)  Response  

a.  2: 1 

b.  1: 1 

c.  1: 2 

d.  1: 4 
