Kinematics (NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics): Questions 56  62 of 233
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Passage
A = 2i + j + k and B = i + j + k are two vectors.
Question number: 56 (1 of 3 Based on Passage) Show Passage
» Kinematics » Scalars and Vectors » Scalar and Vector Products
Question
the unit vector perpendicular to A is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 57 (2 of 3 Based on Passage) Show Passage
» Kinematics » Scalars and Vectors » Scalar and Vector Products
Question
the unit vector perpendicular to B is
Choices
Choice (4)  Response  

a. 


b. 
 
c. 
 
d. 

Question number: 58 (3 of 3 Based on Passage) Show Passage
» Kinematics » Scalars and Vectors » Scalar and Vector Products
Question
The unit vector parallel to A is
Choices
Choice (4)  Response  

a. 
 
b. 


c. 
 
d. 

Question number: 59
» Kinematics » Scalars and Vectors » Vector Addition and Subtraction
Question
A boat is moving with a velocity 3i + 4j with respect to ground. The water in the river is moving with a velocity – 3i – 4j with respect to ground. The relative velocity of the boat with respect to water is
Choices
Choice (4)  Response  

a.  6  8 

b.  6 + 8 

c.  8 

d.  5  

Question number: 60
» Kinematics » Scalars and Vectors » Scalar and Vector Products
Question
The three vectors A = 3i2j + k, B = i3j + 5k and C = 2i + j4k form
Choices
Choice (4)  Response  

a.  isosceles triangle 

b.  a right angled triangle 

c.  no triangle 

d.  an equilateral triangle 

Question number: 61
» Kinematics » VelocityTime Graphs
Question
The speed of a boat is 5km/h in still water. It crosses a river of width 1 km along the shortest possible path in 15 minutes. The velocity of the river water is
Choices
Choice (4)  Response  

a.  4 km/h 

b.  1 km/h 

c.  5 km/h 

d.  3 km/h 

Question number: 62
» Kinematics » Scalars and Vectors » Scalar and Vector Products
Question
If for two vectors A and B, A x B = 0, which of the following is not correct?
(1) They are perpendicular to each other
(2) They act at an angle of 60°
(3) They act at an angle of 30°
(4) They are parallel to each other
Choices
Choice (4)  Response  

a.  2 and 4 are correct 

b.  1 and 3 are correct 

c.  1 and 2 are correct 

d.  1,2 and 3 are correct 
