ECAT Pre Computer Science Chapter 2 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 2 Vectors and Equilibrium

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ECAT Physics Chapter 2 Vectors and Equilibrium

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Question # 1

If the vector 5 N lies along with x-axis, then its component along y-axis will be:

Question # 2

The direction of vector in space is specified by:

Question # 3

When the magnitude of two component vectors are equal to that of their resultant, then the angle between the components is:

Question # 4

Tick the correct answer:

Question # 5

The change of order of vectors in a dot product of two vectors:

Question # 6

The resultant of two velocities 3 m/sec and 400 cm/sec making an angle 90° with each other is:

Question # 7

The direction of a vector in space requires:

Question # 8

A vector which has magnitude 'one' is called:

Question # 9

Two vectors having different magnitudes:

Question # 10

Two forces of 10N and 8N are applied simultaneously to a body. The maximum value of their resultant is:

Question # 11

Two forces each of 10 N act on a body, if the force are inclined at 30° and 60° respectively with x-axis, then x-component of their resultant is:

Question # 12

If two forces of magnitudes 3.5 and 2.5 N act on a body such that the angle between the forces is zero, then magnitude of the resultant will be:

Question # 13

The driection of vector si space is specified by:

Question # 14

An vector of 10 N makes an angle of 45° with x-axis. Angle between its rectangular components with be:

Question # 15

A vector of magnitude 5 N is added to a vector of magnitude 8 N while the orientations are changeable. Range of their possible sum will be very from:

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ECAT Physics Chapter 2 Important MCQ's

Sr.# Question Answer
1 Two forces each of 10 N act on a body, if the force are inclined at 30° and 60° respectively with x-axis, then x-component of their resultant is:
A. 20 N
B. 13.66 N
C. 10 N
D. 8.66 N
2 For measuring the angle between two vectors graphically, we join:
A. Tails of both the vectors
B. Tail of one vector with the head of other
C. Heads of both the vectors
D. None of these
3 Two forces each of the magnitude F act perpendicular to each other. The angle made by the resultant force with the horizontal will be:
A. 30°
B. 45°
C. 60°
D. 90°
4 If x-component of a vector is -3 N and y-component is 3 N, then angle of resultant vector will x-axis is:
A. 45°
B. 315°
C. 135°
D. 225°
5 Choose the set of physical quantities, which have both numerical and directional properties:
A. Velocity, mass
B. Speed, acceleration
C. acceleration weight
D. Distance, force
6 When the magnitude of two component vectors are equal to that of their resultant, then the angle between the components is:
A. 60°
B. 90°
C. 120°
D. 150°
7 The resultant of two velocities 3 m/sec and 400 cm/sec making an angle 90° with each other is:
A. 20 m/sec
B. 5 m/sec
C. 3 m.sec
D. None of these
8 Torque is also called:
A. Momentum
B. Linear inertia
C. Moment of a force
D. Mass
9 The magnitude of resultant of three vectors is 3. Its x-component is one, y-component is two, then its z-component is:
A. 0
B. 1
C. 2
D. 3
10 A person starts his journey from a point 0, travels 4 Km SW, then 4 Km NW, and finally 4 Km north-east. At what distance is he now from point 0?
A. 0 Km
B. 4 Km
C. 8 Km
D. 12 Km

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