1 
If r = 5 m and f = 4 N are along same direction, them torque is 
 A. 20 Nm
 B. 5 Nm
 C. 10 Nm
 D. Zero

2 
Force 12 N and 5 N are add, the resultant con not be 
 A. 13 N
 B. 6 N
 C. 7 N
 D. 17 N

3 
The direction of null vector can be 
 A. (+) ve
 B. () ve
 C. Arbitrary
 D. Zero

4 
The force and torque are analogous to 
 A. Velocity
 B. Mass and weight
 C. Moment of Inertia
 D. Each other

5 
The subtraction of a vector is equivalent to the addition with 
 A. Same direction
 B. Perpendicular direction
 C. Reversed direction
 D. All of these

6 
Minimum number of unequal forces whose vector sum can be zero are. 

7 
Dot product of vector with itself is. 
 A. Zero
 B. 2 A
 C. A<sup>2</sup>
 D. A

8 
The resultant of two forces 30 N and 40 N acting parallel to each other is. 
 A. 30 N
 B. 40 N
 C. 70 N
 D. 10 N

9 
Maximum number of components of a vector may be 
 A. Infinite
 B. One
 C. two
 D. three

10 
The resultant of two forces 3 N and 4 N acting at right angle to each other is 
 A. 7 N
 B. 5 N
 C. 4 N
 D. 1 N
