Physics MCQs

852 MCQs  (Page 44 of 86)

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What is the angle that the given vector makes with y-axis and A=2i+3j ?
A. 30°
B. 60°
C. 90°
D. 120°
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In which quadrant the two rectangular components of a vector have same sign ?
A. 1st
B. 2nd
C. Both 1st and 3rd
D. 4th
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Two vectors A and B are making angle θ with each other. The scalar projection of vector B on vector A is written as____________?
A. b/a
B. A.b/b
C. A.cosθ
D. Both a and b are correct
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Two vectors are A = 3i^+2j^ -k^& B = 3i^-2j^ +k^ , then_____________?
A. B is anti-parallel to a
B. B is a negative vector of a
C. B has a negative magnitude
D. B is perpendicular to a
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If A=B, which of the following is not correct ?
A. b = a^ b^
B. |a| = |b|
C. |a^| = |b^|
D. Ab^ = ba^
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I ^. (j^ x k^) is equal to______________?
A. 1
B. I^
C. J^
D. K^
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The direction of the vector product is given by______________?
A. Head to tail rule
B. Right-hand rule
C. Left-hand rule
D. Triangular rule
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If east, west, north, south, up and down are representing the direction of unit vectors, then east x south has the direction along_____________?
A. West
B. North
C. Down
D. Up
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Null vector is a vector which has________________?
A. Zero magnitude
B. No specified direction
C. Both a and b are correct
D. Both a and b are not correct
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Three coplanar forces acting on a body keep it in equilibrium. They should therefore be_______________?
A. Concurrent
B. Non-concurrent
C. Parallel
D. Non-parallel
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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