Kinematics (NEET Physics): Questions 56  62 of 229
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2099 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 550.00 or
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 parallel 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 A 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 perpendicular to B 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 