For your better entry test preparation and better Physics MCQs preparation, in this section, we are going to post** Vectors And Equilibrium MCQs.**

The sum of all of the force vectors acting on an object is equal to zero when the object is in equilibrium (static or not accelerating).

**Vectors And Equilibrium MCQs**

**1. The rectangular coordinate system is also called**

A. Polar coordinate system

B. Cartesian coordinate system

C. Cylindrical coordinate system

D. Spherical coordinate system

**2. The direction of a vector in space is specified by**

A. One angle

B. Two angle

C. Three angle

D. No angle

**3. Addition of vector obeys**

A. Commutative law

B. Distributive law

C. Associative law

D. All given laws in A, B and C

**4. A vector can be multiplied by a number. The number may be**

A. Dimensionless

B. Dimensional scalar

C. Negative

D. All A, B and C are correct

**5. Unit vector n^ is along**

A. X-axis

B. Normal on a surface

C. Y-axis

D. Z-axis

**6. Cosθi^ + Sinθj^ is a**

A. Vector

B. Position Vector

C. Vector in the direction at angle θ with an x-axis

D. The unit vector in the direction at angle θ with an x-axis

**7. Maximum number of rectangular components are**

A. 1

B. 2

C. 3

D. 4

**8. Maximum number of components of a vector may be**

A. 1

B. 2

C. 3

D. Infinite

**9. Which one is not correct for a vector A= 2i+2j+3k?**

A. Has direction 45° with an x-axis

B. Has magnitude 2

C. Has magnitude 2 and direction °=45° with a y-axis

D. Has magnitude -2

**10. The resultant of two forces of equal magnitudes is also equal to the magnitude of the forces. The angle between the two forces is**

A. 30°

B. 60°

C. 90°

D. 120°

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