The value of p so that vectors and are perpendicular is
6
3
2
None of these
Minimum number of unequal vectors which can give zero resultant are:
Two
Three
Four
More than four
Which of the following cannot be the resultant of the vectors of magnitudes 5 and 10?
7
8
5
The angle between is θ. The value of the triple product is
A2B
Zero
A2B sin θ
A2B cos θ
The vectors are such that then angle between the two vectors will be
45o
60o
75o
90o
4
9
13
120o
0o
are two vectors and θ is the angle between them, if the value of θ is
30o
Rain is falling vertically with a speed of 30 ms-1. A man rides a bicycle with a speed of 10 ms-1 in north to south direction. The angle with the vertical at which the man should hold his umbrella to protect himself from the rain is:
If a vector is perpendicular to the vector , then the value of α is
-1
1/2
-1/2
1