Question

 is a unit vector such that 

Solution

Correct option is

3

 

We have,  

      

  

SIMILAR QUESTIONS

Q1

If  are two unit vectors such that , then the angle between , is 

Q2

, then the angle between  

Q3

If  are unit vectors and θ is the acute angle between them, then  is a unit vector for

Q5

 

For any vector   

                

Q6

 is equal to 

Q7

A unit vector perpendicular to the plane of  and  is 

Q8

The number of vectors of unit length perpendicular to the vectors  

Q9

A unit vector making an obtuse angle with x-axis and perpendicular to the plane containing the points  also makes an obtuse angle with

Q10

 then a unit vector normal to the vectors