49) If for two vectors A and B, AXB =
0, which of the following is not correct?
(1) They are perpendicular to each
other
(2) They act at an angle of 60°
(3) They act at an angle of 30°
(4) They are parallel to each other
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Answer:
A×B = AB sinQ
the resultant for the cross product not to be zero is, we need to have the angle of 90 degree...means the two vector will be perpendicular.. but here the vector product is zero it means that the two vectors are not perpendicular...correct answer is (1) they are not perpendicular to each other...
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