Here are 1st year physics chapterwise MCQs with answerekey in PDF. You can download all notes of 11th class F.A and F.Sc from Zahid Notes. These are solved MCQs of physics 1st year chapter 2.

Physics 1st year MCQs

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Chapter 2 Vectors and Equilibrium

1. Which one is a vector:
a) Length
b) Volume
c) Velocity
d) Work

2. An example of scalar quantity is
a) Displacement
b) Speed
c) Velocity
d) Torque

3. Name the quantity which is vector:
a) Density
b) Power
c) Charge
d) Moment of Force

4. Rectangular coordinate system is also called:
a) Polar coordinate system
b) Cartesian coordinate system
c) Cylindrical coordinate system
d) Space coordinate system

5. The direction of a vector in space is specified by:
a) One angle
b) Two angle
c) Three angle
d) No angle

6. If both components of a vector are negative, then resultant lies in:

7. In which quadrant the two rectangular components of a vector have same sign?
a) 1st
b) 2nd
c) both 1st and 3rd
d) 4th

8. If the x-component of a vector is positive and y-component is negative, then resultant vector lies in what quadrant:

9. If vector A lies in the third quadrant, its direction will be:
a) 180 −
b) 360 −
c) 180 +
d) none

10. A single vector having the same effect as all the original vectors taken together, is called
a) Resultant vector
b) Equal vector
c) Position vector
d) Unit vector

11. When two vectors are anti-parallel, the angle between them is:
a) Zero
b) 180°
c) 90°
d) 270°

12. The resultant of two forces 30 N and 40 N acting at an angle of 90° with each other is
a) 30 N
b) 40 N
c) 50 N
d) 70 N

14. If 6N force act at right angle to 8N force, then the magnitude of resultant will be:
a) 6N
b) 8N
c) 10N
d) 14N
⃗ ⃗ ⃗ ⃗
15. If A + B = B + A, this shows that addition of vectors is
a) Associative
b) Commutative

16. A body is in dynamic equilibrium only when it is
a) At rest
b) Moving with a variable velocity
c) Moving with uniform acceleration
d) Moving with uniform velocity 22. Vectors A is along y axis, its component along x axis is:
a) A
b) A/2
c) Zero
d) 2A

23. The angle between rectangular components of vector is:
a) 45°
b) 60°
c) 90°
d) 180°

24. A force of 10N is acting along x-axis, its component along y-axis is
a) 10N
b) 5N
c) 8.66N
d) Zero N

29. Dot product of two non-zero vectors is zero, when angle between them is:
a) 0
b) 30
c) 45
d) 90

31. The scalar product of two vectors is maximum when they are:
a) Parallel
b) Perpendicular
c) Anti-parallel

43. If the position ̅and force are in same direction, then torque will be:
a) Maximum
b) Minimum
c) Same
d) Negative
44. The direction of torque can be found by:
a) Head to tail rule
b) Right hand rule
c) Left hand rule
d) Fleming rule

45. At what angle, the two vectors of the same magnitude have to oriented, if they were to be combined to give a resultant equal to a vector of same magnitude?
a) 45°
b) 90°
c) 120°
d) 180°

46. If the line of action of force passes through axis of rotation or the origin, then its torque is:
a) Maximum
b) Unity
c) Zero
d) None of these

47. The magnitude of a vector can never be:
a) Positive
b) Negative
c) Positive and negative
d) None of these
48. The minimum number of unequal forces whose resultant will be zero:
a) 2
b) 3
c) 4
d) 5

49. Torque is defined as.
a) Turning effect of force
b) Cross product of force and position vector
c) Product of force and moment arm
d) All a, b and c are correct

50. SI unit of torque is:
a) Nm-1
b) Nm
c) Nm-2
d) None

51. A body will be in complete equilibrium when it is satisfying:
a) 1st condition of equilibrium
b) 2nd condition of equilibrium
c) Both 1st and 2nd condition of equilibrium
d) Impossible

53. If a body is at rest, then it will be in
a) Static equilibrium
b) Dynamic equilibrium
c) Translational equilibrium
d) Unstable equilibrium

54. The magnitudes of rectangular component are equal if its angle with x-axis is:
a) 45°
b) 90°
c) 30°
d) 0°

56. 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) 30o
b) 60 o
c) 90 o
d) 120 o

57. The magnitude of dot and cross product of two vectors are 6√3 and 6 respectively. The angle between them will be
a) 0°
b) 30°
c) 45°
d) 60°
58. The magnitude of cross-product and dot-product of two vectors are equal, the angle between them is
a) Zero
b) 45°
c) 90°
d) 180°

59. Two vectors to be combined have magnitudes 60 N and 35 N. The correct answer for the magnitude of their resultant will be:
a) 15 N
b) 20 N
c) 70 N
d) 100 N

MCQs of Physics 1st year chap 1
MCQs of Physics 1st year chap 3
MCQs of Physics 1st year chap 4
MCQs of Physics 1st year chap 5
MCQs of Physics 1st year chap 6
MCQs of Physics 1st year chap 7
MCQs of Physics 1st year chap 8
MCQs of Physics 1st year chap 9
MCQs of Physics 1st year chap 10

2nd year all subjects PDF Notes
MCQs of Physics 1st year chapter 2 Reviewed by Saif Ullah ZahidonSeptember 14, 2019 Rating: 5