JEE Questions for Physics Vectors Quiz 8 - MCQExams.com

Position of a particle in a rectangular-co-ordinatesystem is (3, 2, 5). Then its position vector will be

  • Physics-Vectors-94867.png
  • 2)
    Physics-Vectors-94868.png

  • Physics-Vectors-94869.png
  • None of these
Which of the following statement is true
  • When the coordinate axes are translated the component of a vector in a plane changes
  • When the coordinate axes are rotated through some angle components of the vector change

  • Physics-Vectors-94871.png

  • Physics-Vectors-94872.png
A force of 5 N acts on a particle along a direction making an angle of 60° with vertical. Its vertical component will be
  • 10 N
  • 3 N
  • 4 N
  • 2.5 N

Physics-Vectors-94874.png

  • Physics-Vectors-94875.png
  • 2)
    Physics-Vectors-94876.png

  • Physics-Vectors-94877.png

  • Physics-Vectors-94878.png

Physics-Vectors-94880.png
  • 2.5 s
  • 4 s
  • 1 s

  • Physics-Vectors-94881.png
A hall has the dimensions 10 m × 12 m × 14 m. A fly starting at one corner ends up at a diagonally opposite corner. What is the magnitude of its displacement.
  • 17 m
  • 26 m
  • 36 m
  • 21 m
100 coplanar forces each equal to 10 N act on a body. Each force makes angle π / 50 with the preceding force. What is the resultant of the forces
  • 1000N
  • 500N
  • 250N
  • Zero

Physics-Vectors-94885.png
  • 30°
  • 45°
  • 60°
  • 0°

Physics-Vectors-94887.png

  • Physics-Vectors-94888.png
  • 2)
    Physics-Vectors-94889.png

  • Physics-Vectors-94890.png

  • Physics-Vectors-94891.png

Physics-Vectors-94892.png

  • Physics-Vectors-94893.png
  • 2)
    Physics-Vectors-94894.png

  • Physics-Vectors-94895.png

  • Physics-Vectors-94896.png
Five equal forces of 10 N each are applied at one point and all are lying in one plane. If the angles between them are equal, the resultant force will be
  • Zero
  • 10 N
  • 20 N

  • Physics-Vectors-94898.png
Any vector in an arbitrary direction can always be replaced by two (or three)
  • Parallel vectors which have the original vector as their resultant
  • Mutually perpendicular vectors which have the original vector as their resultant
  • Arbitrary vectors which have the original vector as their resultant
  • It is not possible to resolve a vector
Angular momentum is
  • A scalar
  • A polar vector
  • An axial vector
  • None of these

Physics-Vectors-94899.png
  • 500 m
  • 300 m
  • 150 m
  • 100 m

Physics-Vectors-94901.png

  • Physics-Vectors-94902.png
  • 2)
    Physics-Vectors-94903.png

  • Physics-Vectors-94904.png

  • Physics-Vectors-94905.png

Physics-Vectors-94907.png
  • Parallel to the position vector
  • Perpendicular to the position vector
  • Directed towards the origin
  • Directed away from the origin
Which of the following is a scalar quantity
  • Displacement
  • Electric field
  • Acceleration
  • Work

Physics-Vectors-94909.png
  • 1
  • 2)
    Physics-Vectors-94910.png

  • Physics-Vectors-94911.png

  • Physics-Vectors-94912.png
A boy walks uniformly along the sides of rectangular park of size 400 m × 300 m, starting from one corner to the other corner diagonally opposite. Which of the following statement is incorrect.
  • He has travelled a distance of 700 m
  • His displacement is 700 m
  • His displacement is 500 m
  • His velocity is not uniform throughout the walk

Physics-Vectors-94915.png

  • Physics-Vectors-94916.png
  • 2)
    Physics-Vectors-94917.png

  • Physics-Vectors-94918.png

  • Physics-Vectors-94919.png
There are two force vectors, one of 5 N and other of 12N. At what angle the two vectors be added to get resultant vector of 17 N, 7 N and 13 N respectively.
  • 0°, 180° and 90°
  • 0°, 90° and 180°
  • 0°, 90° and 90°
  • 180°, 0° and 90°
If the sum of two unit vectors is a unit vector, then magnitude of difference is

  • Physics-Vectors-94921.png
  • 2)
    Physics-Vectors-94922.png

  • Physics-Vectors-94923.png

  • Physics-Vectors-94924.png
Three forces acting on a body are shown in the figure. To have the resultant force only along the y–direction, the magnitude of the minimum additional force needed is
Physics-Vectors-94926.png

  • Physics-Vectors-94927.png
  • 2)
    Physics-Vectors-94928.png
  • 0.5 N
  • 1.5 N
Two forces, each of magnitude F have a resultant of the same magnitude F. The angle between the two forces is
  • 45°
  • 120°
  • 150°
  • 60°
Two force of 12N and 8N act upon a body. The resultant force on the body has maximum value of
  • 4 N
  • 0 N
  • 20 N
  • 8 N

Physics-Vectors-94932.png
  • Can be zero
  • Cannot be zero

  • Physics-Vectors-94933.png

  • Physics-Vectors-94934.png
Two equal forces are acting at a point with an angle of 60° between them. If the resultant force is equal to 40√3 N, the magnitude of each force is
  • 40 N
  • 20 N
  • 80 N
  • 30 N
Forces F1 and F2 act on a point mass in two mutually perpendicular directions. The resultant force on thepoint mass will be

  • Physics-Vectors-94937.png
  • 2)
    Physics-Vectors-94938.png

  • Physics-Vectors-94939.png

  • Physics-Vectors-94940.png

Physics-Vectors-94942.png
  • 60°
  • 0°
  • 120°
  • 90°

Physics-Vectors-94943.png

  • Physics-Vectors-94944.png
  • 2)
    Physics-Vectors-94945.png

  • Physics-Vectors-94946.png

  • Physics-Vectors-94947.png
0:0:1


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