A force of 20 N acts on a particle along a direction, making an angle of 60° with the vertical. The component of the force along the vertical direction will be
1. 2 N
2. 5 N
3. 10 N
4. 20 N
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf , then the direction cosines of the vector are:
(direction cosines (or directional cosines) of a vector are the cosines of the angles between the vector and the three +ve coordinate axes.)
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biologyis a vector with magnitude A, then the unit vector in the direction of is
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA force F applied at a 30° angle to the x-axis has the following X and Y components:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA child pulls a box with a force of at an angle of above the horizontal. Then the horizontal
and vertical components of the force will be:
1. 100 N, 175 N
2. 86.6 N, 100 N
3. 100 N, 86.6 N
4. 100 N, 0 N
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf and , then the vector having the same magnitude as that of and parallel to is:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA force is 60 ° inclined to the horizontal. If its rectangular component in the horizontal direction is 50 N, then the magnitude of the force in the vertical direction is
1. 25 N
2. 75 N
3. 87 N
4. 100 N
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFigure shows the orientation of two vectors u and v in the XY plane.
Which of the following is correct?
1. a and p are positive while b and q are negative
2. a, p, and b are positive while q is negative
3. a, q, and b are positive while p is negative
4. a, b, p, and q are all positive
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf a unit vector is rotated through an angle of 45° anticlockwise, then the new vector will be:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. 20m
2. 7.2 m
3. 5.0 m
4. 4.5 m
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology