NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 173  178 of 2142
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 550.00 or
Question number: 173
» Kinematics » Average Speed and Instantaneous Velocity
Question
An air craft executes a horizontal loop of radius 1 km with a steady speed of 900 km/h. The ratio of centripetal acceleration to that gravitational acceleration will beta)
Choices
Choice (4)  Response  

a.  6.38: 1 

b.  2.25: 9.8 

c.  2.5: 9.8 

d.  1: 6.38 

Question number: 174
» Kinematics » Average Speed and Instantaneous Velocity
Question
A body is projected downdwards at an angle of 30° to the horizontal with a velocity of 9.8 m/s from the top of a tower 29.4 m high. How long will it take before striking the ground?
Choices
Choice (4)  Response  

a.  3s 

b.  Is 

c.  4s 

d.  2s 

Question number: 175
» Kinematics » Average Speed and Instantaneous Velocity
Question
A ball projected with speed ‘u’ at an angle of projection 15° has range R. The other angle of projection at which the range will not be same with same initial speed ‘u’ is
Choices
Choice (4)  Response  

a. 
90° 

b. 
35° 

c. 
45° 

d. 
75° 

Question number: 176
» Kinematics » Average Speed and Instantaneous Velocity
Question
A body of mass 2 kg lying on a smooth surface is attached to a string 3 m long and then whirled round in a horizontal circle making 60 revolution per minute. The centripetal acceleration will be
Choices
Choice (4)  Response  

a.  1.18 m/s ^{2} 

b.  2.368 m/s ^{2} 

c.  23.68 m/s ^{2}


d.  118.4 m/s ^{2} 

Question number: 177
» Laws of Motion » Centripetal Force
Question
A body of mass 0.1 kg is moving on circular path of diameter 1.0 m at the rate of 10 revolutions per 31.4 seconds. The centripetal force acting on the body is 
Choices
Choice (4)  Response  

a.  0.2 N 

b.  4N 

c.  2N 

d.  0.4 N 

Question number: 178
» Kinematics » Motion in a Plane
Question
The height y and the distance x along the horizontal at plane of the projectile on a certain planet (with no surrounding atmosphere) are given by y = (8t  5t2) metre and x = 6t metre where t is in second. The velocity with which the projectile is projected is
Choices
Choice (4)  Response  

a.  6 m/s 

b.  8 m/s 

c.  10 m/s 

d.  Data is insufficient 
