KinematicsScalars and Vectors (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 12  15 of 15
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Question number: 12
» Kinematics » Scalars and Vectors » Scalar and Vector Products
Question
A boy walks uniformly along the sides of a rectangular park of size 400 m x 300 m, starting from one corner to the other corner diagonally opposite. Which of the following statements is correct?
(1) He has travelled a distance of 700 m
(2) His displacement is 500 m
(3) His velocity is not uniform throughout the walk
(4) His displacement is 700 m
Choices
Choice (4)  Response  

a.  1 and 3 are correct 

b.  1, 2 and 3 are correct 

c.  2 and 4 are correct 

d.  1 and 2 are correct 

Question number: 13
» 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: 14
» 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: 15
» 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 
