NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics: Questions 143  147 of 2142
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Question number: 143
» Kinematics » Average Speed and Instantaneous Velocity
Question
A ball is projeced from O with an initial velocity 700 cm/s in a direction 37° above the horizontal. A ball B, 500 cml away from O on the line of the initial velocity of A, isl released from rest at the instant A is projected. The height! through which B falls, before it is hit by A and the directionl of the velocity A at the time of impact will respectively bel [given g = 10 m/s2, sin 37° = 0.6 and cos 37° = 8.0]
Choices
Choice (4)  Response  

a.  245 cm, 20° 44 

b.  300 cm, 27° 43 

c.  255 cm, 27° 43 

d.  250 cm, 28° 42 

Question number: 144
» Kinematics » Uniform Circular Motion
Question
The ratio of angular speeds of minute hand and hour hand of a watch is 
Choices
Choice (4)  Response  

a.  6: 1 

b.  1: 6 

c.  1: 12 

d.  12: 1 

Question number: 145
» Kinematics » Motion in a Plane
Question
A ball thrown by one player reaches the other in 2 sec. The maximum height attained by the ball above the point of projection will be about
Choices
Choice (4)  Response  

a.  2.5 m 

b.  7.5 m 

c.  10 m 

d.  5 m 

Question number: 146
» Kinematics » Average Speed and Instantaneous Velocity
Question
A projectile thrown from a height of 10 m with velocity of √2 m/s, the projectile will fall, from the foot of projection, at distance (g = 10 m/s ^{2})
Choices
Choice (4)  Response  

a.  1 m 

b.  3 m 

c.  √2 m 

d.  2 m 

Question number: 147
» Kinematics » Uniformly Accelerated Motion
Question
The shaft of an electric motor starts from rest and on the application of a torque, it gains an angular acceleration given by a = 3t –t ^{3} during the first 2 seconds after it starts after which a = 0. The angular velocity after 6 sec will be –
Choices
Choice (4)  Response  

a.  2 rad/sec 

b.  1 rad/sec 

c.  3 rad/sec 

d.  4 rad/sec 
