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

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

Question # 2

The perpendicular distance from the axis of rotation to the line of action of force is called:

Question # 3

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

Question # 4

Scalar product is also called:

Question # 5

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

Question # 6

For measuring the angle between two vectors graphically, we join:

Question # 7

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 # 8

By convention, torques producing clockwise rotation are taken as:

Question # 9

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:

Question # 10

If a vector lies in second quadrant, than Bxand Byare:

Question # 11

Choose the set of physical quantities, which have both numerical and directional properties:

Question # 12

Cosine of an angle is positive in:

Question # 13

All trigonometric functions (sine, cosine, tangent etc) are positive in:

Question # 14

The magnitude of resultant of three vectors is 3. Its x-component is one, y-component is two, then its z-component is:

Question # 15

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

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ECAT Physics Chapter 2 Important MCQ's

Sr.# Question Answer
1 Torque is also called:
A. Momentum
B. Linear inertia
C. Moment of a force
D. Mass
2 The direction of vector in space is specified by:
A. One angle
B. Two angles
C. Three angles
D. None of these
3 The vector in space has:
A. One component
B. Two components
C. Three components
D. None of these
4 A force of 5 n is acting Y-axis. Its component along X-axis is:
A. 7 N
B. 5 N
C. Zero
D. 10 N
5 Two vectors having different magnitudes:
A. Have their directions opposite
B. May have their resultant zero
C. Cannot have their resultant zero
D. None of these
6 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
7 The perpendicular distance from the axis of rotation to the line of action of force is called:
A. Moment arm
B. Moment of a force
C. Torque
D. Non of these
8 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°
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 Tick the correct answer:
A. Torque is a vector quantity
B. Torque is the turning effect of a force
C. Torque is called moment of a force
D. All of above

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