FSC Physics MCQs Part 1 Physics Part 2 HSSC Pre Medical Pre Engineering text Book Questions first year and second-year Physics mcqs

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Rectangular coordinate system is also called
A. polar coordinate system B. Cartesian coordinate system
C. cylindrical coordinate system D. spherical coordinate system
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[explanation]B[/explanation]
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Addition of vector obeys
A. commutative law B. distributive law
C. associative law D. all given laws in a , b and c
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[explanation]D[/explanation]
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Cos?i^ + Sin?j^ is a
A. vector B. position vector
C. vector in the direction at angle ? with x-axis D. unit vector in the direction at angle ? with x-axis
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[explanation]D[/explanation]
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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. 30? B. 60?
C. 90? D. 120?
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[explanation]D[/explanation]
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Two vectors A and B are making angle ? with each other. The scalar projection of vector B on vector A is written as
A. A.B/A B. A.B/B
C. A.cos ? D. both a and b are correct
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[explanation]A[/explanation]
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If east, west, north, south, up and down are representing the direction of unit vectors, then east x south has direction along
A. west B. north
C. down D. up
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[explanation]C[/explanation]
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Torque is defined as
A. turning effect of force B. cross product of position vector and force
C. product of force and moment arm D. all a, b and c are correct
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[explanation]D[/explanation]
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Which one is not a type of dynamic equilibrium?
A. rotational equilibrium B. translational equilibrium
C. static equilibrium D. both a and c are corret answer.
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[explanation]C[/explanation]
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which of the following pairs does not have identical dimensions ?
A. torque and energy B. momentum and impulse
C. energy and work D. mass and moment of inertia
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[explanation]D[/explanation]
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It is easier to turn a steering wheel with both hands than with a single hand because
A. accelerating force increases on the wheel B. two forces act on the wheel
C. two hands provide firm grip D. couple acts on the wheel
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[explanation]D[/explanation]
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