1. . Which of the following is a scalar quantity?
(A) Energy
(B) Velocity
(C) Force
(D) Torque
2. . Which one is the vector quantity?
(A) Density
(B) Length
(C) Force
(D) Work
3. . The angle between two rectangular components of a vector is:
(A) 30°
(B) 60°
(C) 90°
(D) 180°
4. . A force of 6N is acting along x–axis. Its y–component is:
(A) 6N
(B) Zero
(C) 12N
(D) 3N
5. . Cos 180° is equal to:
(A) 1
(B) 1
(C) 0
(D) 45
6. . If vectors A and B are parallel to each other then:
(A) A·B = 0
(B) A·B = 1
(C) A·B = AB
(D) A·B = -AB
7. . Time is example of:
(A) Vector
(B) Scalar
(C) Negative of a vector
(D) Null vector
8. . Force is example of:
(A) Vector
(B) Scalar
(C) Negative of a vector
(D) Null vector
9. . If force of 10 N acts on a body making angle of 90°, its horizontal component will be:
(A) 90 N
(B) 0
(C) 1 N
(D) 10 N
10. . Work is a:
(A) Vector
(B) Scalar
(C) Negative of a vector
(D) Null vector