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

A vector which has magnitude 'one' is called:

Question # 3

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?

Question # 4

The direction of a vector in space requires:

Question # 5

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

Question # 6

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

Question # 7

The sum of two or more vectors is equal to a single vector which is called:

Question # 8

Two vectors having different magnitudes:

Question # 9

By convention, torques producing clockwise rotation are taken as:

Question # 10

Cosine of an angle is positive in:

Question # 11

The rectangular components of a vector are equal in magnitude when the vector makes and angle _______with their x-component:

Question # 12

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 # 13

The magnitude of the resultant of two forces may be increased by:

Question # 14

If x-component of a vector is -3 N and y-component is 3 N, then angle of resultant vector will x-axis is:

Question # 15

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

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ECAT Physics Chapter 2 Important MCQ's

Sr.# Question Answer
1 All trigonometric functions (sine, cosine, tangent etc) are positive in:
A. 1st quadrant
B. 2nd quadrant
C. 3rd quadrant
D. 4th quadrant
2 An vector of 10 N makes an angle of 45° with x-axis. Angle between its rectangular components with be:
A. 45°
B. 90°
C. 135°
D. Zero
3 If the vector 5 N lies along with x-axis, then its component along y-axis will be:
A. Zero
B. 5 N
C. 7 N
D. 10 N
4 The sum of two or more vectors is equal to a single vector which is called:
A. Component vector
B. Resultant vector
C. Product vector
D. None of these
5 If a vector lies in second quadrant, than Bxand Byare:
A. -,+
B. +,-
C. +,+
D. -,-
6 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°
7 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°
8 The driection of vector si space is specified by:
A.
One angle
B. Two angles
C. Three angles
D. None of above
9 Two forces of 10 N and 8 N are applied simultaneously to a body. the maximum value of their resultant is:
A. 2 N
B. - 2 N
C. 18 N
D. 36 N
10 The direction of vector in space is specified by:
A. One angle
B. Two angles
C. Three angles
D. None of these

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