1. How many vector can be represented

- All of these
**correct** - Bold letter
- Arrow over capital letter
- Graphically

2. The minimum number of unequal forces whose vector sum is zero must be?

- 2
- 1
- 3
**correct** - 5

3. If the line of action of the force passes through the axis of rotation then the torque is?

- Maximum
- Counter clockwise direction
- Clockwise in direction
- Zero
**correct**

4. Vectors are those physical quantities which require

- Magnitude and direction
**correct** - Direction
- None of these
- Magnitude

5. Multiplication of a vector is carried out by a

- Direction
- Number
**correct** - None of these
- Number and direction

6. The positions of two airplanes at any instant are a A (2,3,4) an B (5, 6, 7) from the origin in km. Find the distance between the two airplanes.

- 5.2 Km
**correct** - 3.2 Km
- 4.9 Km
- 5.0 Km

7. When two axes are drawn at right to each other are called:

- All of these
**correct** - Coordinate axes system
- Rectangular coordinate system
- Cartesian system

8. A component of a vector has its?

- Effective value
- B and C
- Normal value
- Given direction
**correct**

9. Vector subtractions is made when vectors are just

- Added
- None of these
- Only make it negative
- First make it negative then add
**correct**

10. The coordinate axes are those in which lines are drawn

- All of these
**correct** - Parallel
- Perpendicular
- At right angle

11. Negative of vector can be made when Magnitude is made negative

- Only directions is changed
**correct** - None of these
- Directions is reverse with negative
- Direction is reverse with negative magnitude

12. Given A = 2i – 2j + K the magnitude of this vector is?

- 1
- 5
**correct** - 2
- 3

13. The component of a vector has its direction as?

- Opposite
- Perpendicular
**correct** - Same
- None of these

14. For a vector A?

- A.A = 0
- A = A2
- A = 1
- A = A
**correct**

15. The unit vectors is not restricted to Cartesian coordinate system only?

- None of these
**correct** - Specific direction
- Any direction
- Not a and b

16. The vector product is?

- Additive
- Anticommutative
**correct** - Associative
- Commutative

17. Rectangular components are those which are

- Perpendicular to each other
- Right angle to each other
- All of these
**correct** - Making angle of 90⁰ with each other

18. Position vector is a vector, which describes the?

- Location of a point with respect to any point
- Location of a point with respect to some related point
- None of these
- Location of a point with respect to origin
**correct**

19. An axes which is at right angle to both X and Y axes and direction is in space is called:

- Zero vector axis
- Z-axis
**correct** - None of these
- Unit vector axis

20. Position vector is a vector which is drawn?

- From one point to another
- None of these
- Always from origin to that point
- From origin to that point
**correct**

**Entry Test 2021 Physics Vectors and Equilibrium MCQS Online Preparation Sample Paper 2 Questions with Answer**

1. The cross product of two perpendicular vectors has magnitude?

- Minimum value
- Zero
- Maximum value
**correct** - None of these

2. The magnitude of the scalar product is

- AB sin Ѳ
- AB
- AB cos Ѳ
**correct** - None of these

3. In right hand rule, the direction of the product vector will be?

- Along the rotation of fingers
- Perpendicular to the erect thumb
- Along the erect thumb
**correct** - None of these

4. The vector sum of three vectors gives a zero resultant. What can be the orientations?

- 90⁰
- 120⁰
**correct** - 180⁰
- 60⁰

5. The cross product of parallel vectors is zero when angle between?

- Ѳ = 90⁰
- A and C
**correct** - Ѳ = 0⁰
- Ѳ = 180⁰

6. Is it possible to add a vector quantity to a scalar quantity?

- None of these
- No
- Never
**correct** - Yes

7. How many the multiplications of vectors are?

- 2
**correct** - None of these
- 1
- 3

8. The cross product of parallel vectors has magnitude

- Zero
**correct** - Minimum value
- None of these
- Maximum value

9. Under what circumstance would a vector have components that are equal in magnitude?

- 135⁰, 225⁰
- None of these
- 45⁰, 145⁰, 245⁰
- 45⁰, 135⁰, 225⁰ and 315⁰
**correct**

10. Vector A lies in XY plane. For what orientation with both of its rectangular components be negative?

- None of these
- I-quadrant
- III-quadrant
**correct** - II-Quadrant

11. When the vectors are mutually perpendicular then their scalar product is?

- Zero
**correct** - Maximum
- Minimum
- None of these

12. Vector A lies in the XY-plane. For what orientation will its components have opposite signs?

- A and C
**correct** - II-quadrant
- IV-quadrant
- III-quadrant

13. The self product of two vectors in cross product is?

- None of these
- Zero
**correct** - Only same vector
- Square of vector

14. Can a vector have a component greater than the vector’s magnitude?

- Yes is same cases
- None of these
- No
- Yes
**correct**

15. Can the magnitude of a vector have a negative value?

- None of these
- Yes
- Yes is same cases
- No
**correct**

16. Find the angle between two forces of equal magnitude of their resultant is also equal to the magnitude of either of these force.

- 180⁰
- 120⁰
**correct** - 360⁰
- 60⁰

17. The position of two aeroplanes at any instant are at A (2, 3, 4) an B (5, 6, 7) from the origin in km. Find the distance between the two aeroplanes.

- 5.0 Km
- 5.2Km
**correct** - 4.9Km
- 3.2Km

18. The magnitude of the scalar Product can also written as?

- None of these
- Magnitude of vector and effective component of vector
**correct** - Vector and perpendicular component of vice vector
- vector and effective component of vector

19. The self product of vector is equal to

- Vector
- Zero
- Square of vector
**correct** - None of these

20. If one of the rectangular components of a vector is not zero, can its magnitude be zero?

- It is zero
- It is not Zero
**correct** - None of these
- It may be negative

**Entry Test 2021 Physics Vectors and Equilibrium MCQS Online Preparation Sample Paper 3 Questions with Answer**

1. The magnitude of i² in scalar product is?

- Zero
- 1
**correct** - Less than 1
- Greater than 0

2. Can a body rotate about its center of gravity under the action of its weight?

- Both
- Yes
- None of these
- No
**correct**

3. The magnitude of j² in cross product is?

- Zero
**correct** - Greater than 1
- 1
- Less than 0

4. Rectangular components of a vector are those which have angle between them?

- 0⁰
- 60⁰
- 90⁰
**correct** - 30⁰

5. A body in equilibrium implies that it is not moving nor rotating?

- Sometimes is equilibrium
- False
**correct** - None of these
- True

6. How would the two vectors of the same magnitude have to be oriented, if they were to be combined to give a result equal to a vector of the same magnitude?

- 270⁰
- None of these
- 60⁰
- 120⁰
**correct**

7. Torque is zero if

- Body is at rest
- Uniform angular acceleration
- Moment arm is zero
**correct** - None of these

8. In torque when the force is kept constant and the moment arm increases, then the torque?

- Increases
**correct** - None of these
- Remains constant
- Decreases

9. The SI units of torque is?

- Nm²
- Nm¯²
- Nm¯¹
- Nm
**correct**

10. Torque is a physical quantity which is?

- Scalar quantity
- Constant quantity
- None of these
- Vector quantity
**correct**

11. Two vectors have unequal magnitudes can their sum be zero?

- Can be zero
- No
- Yes
**correct** - None of these

12. The direction of torque is?

- Perpendicular plan formed by F an r
**correct** - Along F
- None of these
- Along r

13. If we keep the moment arm, fixed while change the force, them, the torque is?

- None of these
- Some what change
- Changed
**correct** - Does not change

14. The perpendicular distance from the axis of rotation to the line of the action of force is called?

- Linear distance
- None of these
- Angular distance
- Momentum arm
**correct**

15. The magnitude of work is zero when the angle between force and displacement is:

- 10⁰
- None of these
- 90⁰
**correct** - 0⁰

16. Can you add zero to a null vector?

- None of these
- No
**correct** - Yes
- Yes is some cases

17. Torque is the turning effect of a?

- Force
**correct** - None of these
- Body
- Momentum

18. If coplanar forces acting on a body form a closed polygon, then the body is said to be in equilibrium?

- False
**correct** - Yes
- None of these

Sometimes is equilibrium

19. The direction of torque can be determined by?

- Left hand rule
- None of these
- Head to tail rule
- Right hand rule
**correct**

20. The two vectors to be combined have magnitude 60 N 35 N. Pick the correct answer from those given below and tell why is it the only one of the three that is correct.

(i)100 N (ii) 70 N (iii)20 N

- (ii)is correct
- (i) is correct

(ii)may be correct**correct**- (iii)is correct