# Physics Vector Chapter Important MCQs For ETEA

1) If two vectors A and B are parallel to each other than A.B is

1. Zero
2. AB
3. AB Cos
4. A2

2) If two vectors are parallel to each other than A*B is

1. Zero
2. AB
3. AB Cos
4. A2

3) The minimum number of the equal vectors whose sum is ………..

1. Two
2. Three
3. Four
4. Zero

4) Vector product does not obey ………….. law.

1. Commutative
2. Associative
3. None

5) The angle between X-axis and –X-axis is ………

1. 0
2. 90
3. 180
4. 360

6) If the direction of vectors A*B is along X-axis then vector A and B lies in …………….. plane

1. X-Y plane
2. Y-Z plane
3. Z-X plane
4. X-Z plane

7) ……………. Is an example of a scalar product

1. Velocity
2. Torque
3. Speed
4. Momentum

8) ……………. Is an example of central force

1. Weight
2. Reaction
3. Fc =mv2 /r
4. Both ‘a’ and ‘c’

9) There can be ………………. Rectangular component of a vector in the X-Y plane

1. 2
2. 3
3. Infinite
4. Zero

10) If vector A is negative of B then A + B = ………..

1. Null Vector
2. Unit Vector
3. Both

11) The magnitude of resultant of two vectors is least when the angle between them is

1. Zero
2. 90
3. 180
4. 360

12) If two vectors are anti-parallel then their resultant is ……….

1. A + B
2. A – B
3. B – A
4. None

13) If Ax and Ay both are negative then the resultant lies in …………… quadrant.

1. 1st
2. 2nd
3. 3rd
4. 4th

14) A vector lies on Y-axis its X-axis will be

1. Zero
2. Non zero
3. Positive
4. Negative

15) Rectangular component if vectors are……………. to each other.

1. Parallel
2. Perpendicular
3. Opposite

16) In static equilibrium, a body will be in …………

1. Rest
2. Motion
3. Vibration
4. Turning

17) Which one of the following is not a central force ………….

1. Centripetal
2. Centrifugal
3. Weight
4. Spring force

18) The addition is the reverse process of

1. Resolution of vector
2. Multiplication of vector
3. Direction of vector
4. All of the above

19) The magnitude of Null vectors is ……….

1. Zero
2. 1
3. Both

20) The sum of a vector to its negative vector is a ……….. Vector.

1. Unit
2. Null
3. Positive
4. Negative

21) Which one is a derived quantity?

1. Area
2. Length
3. Time
4. Mass

22) [MLT-2] is dimension of ……..

1. Velocity
2. Force
3. Speed
4. Acceleration

23) 1053 can be written in significance notation

1. 05*103
2. 105* 103
3. 1053*103
4. 05*10-3

24) A light-year is a unit of ……….

1. Light
2. Time
3. Distance
4. Momentum

25) A plane angle is measured in

1. Ste-radians
2. Radians
3. Degree
4. Two dimension

26) The unit of solid angle is ……………

1. Radian
2. Degree
3. Ste Radian
4. None

27) Which of the following pair has the same dimension

1. Speed and velocity
2. Velocity and acceleration
3. Acceleration and force
4. Force and speed

28) The supplementary units are …………….. in numbers.

1. 2
2. 4
3. 3
4. None

30) The least count of meter rod is …………..

1. Meter
2. Millimeter
3. Centimeter
4. None

30) A number expressed in standard form is called ……………

1. Scientific notation
2. Algebraic notation
3. Set builder notation
4. None

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#### Ubaid Khan

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