NEET Physics: Questions 135  140 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: 135
» Kinematics » Scalars and Vectors » Scalar and Vector Products
Question
the vector P = ai + aj + 3k and Q = ai  2j  k are perpendicular to each other. The positive value of a is
Choices
Choice (4)  Response  

a.  4 

b.  9 

c.  3 

d.  13 

Question number: 136
» Kinematics » Scalars and Vectors » Scalar and Vector Products
Question
A particle moves from position 3i + 2j6k to 14i + 13j + 9k due to a uniform force of (4i + j + 3k) N. If the displacement in metres then work done will be
Choices
Choice (4)  Response  

a.  250 J 

b.  300 J 

c.  100 J 

d.  200 J 

Question number: 137
» Kinematics » Scalars and Vectors » Scalar and Vector Products
Question
IfAxB= A. B , then angle between A and S will be
Choices
Choice (4)  Response  

a.  30 

b. 
60° 

c. 
45° 

d.  None of the above 

Passage
A particle moves along xaxis and its acceleration at any time t is a = 2 sin (πt), where t is in seconds and a is in m/s ^{2}. The initial velocity of particle (at time t = 0) is u = 0.
Question number: 138 (1 of 3 Based on Passage) Show Passage
» Kinematics » Motion in a Straight Line
Question
the distance travelled (in meters) by the particle from time to t = 0 to t = 1 is will be
Choices
Choice (4)  Response  

a.  4/π 

b.  2/π 

c.  1/π 

d.  None of the above 

Question number: 139 (2 of 3 Based on Passage) Show Passage
» Kinematics » Motion in a Straight Line
Question
The magnitude of displacement (in meters) by the particle from time t = 0 to t = t will be –
Choices
Choice (4)  Response  

a.   

b.   + 

c. 


d.  None of the above 

Question number: 140 (3 of 3 Based on Passage) Show Passage
» Kinematics » Motion in a Straight Line
Question
The distance travelled (in meters) by the particle from time t = 0 to t = t will be –
Choices
Choice (4)  Response  

a.   + 

b.   

c. 


d.  All of the above 
