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Physics MCQs Ch 2 with key
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1- Whats the resultant of 3N and 4N forces acting at right angles
2-If A cross B is along z-axis then vectors A and B will lie in
3-If A= 2i+4j+5k and B=-2i+2j+k. then A.B is
4-Parallel vectors of same magnitude
5-When the magnitude of two components of vectors are equal to that of their resultant, then the angle b/w components id
6-If two unit vectors are inclined at angle of 90, then magnitude of their resultant is
7-If the vectors A and B represented in such a way that A+B=A-B, then the angle b/w A and B ia
8-The magnitude of dot and cross product of two vectors is 10 in each case. find the angle b/w two vectors
9-If A*B=-B*A then angle b/w A and B is
10-Which of the following physical quantities are represented by axial vectors
11-The two vectors have magnitude 3 and 5. if angle b/w them is 60, then dot product of two vectors is
12-The minimum number of vectors of equal magnitude required to produce a zero resultant is
13-The minimum number of vectors of unequal magnitude required to produce a zero resultant is
14-two forces of numerically equal to 10dynes are acting, then the resultant is
15-what is the angle between i+j+k and i
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