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14) Distinguish between dot product and cross product. |
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Answer» Cross product and dot product are two different types of vector product. Cross product of two vectors always gives a vector quantity whereas dot product gives scalar quantity.Let us consider two vectorsAandB.Taking dot product ,A•B =ABcosß , where ß is the angle between vectorsAandBand A and B are magnitudes of vectorsA and Brespectively. The result is a scalar quantity.Taking cross product,A×B=AB sinß â , where ß is the angle between vectors A and B and A and B are magnitudes of vectors A and B respectively. Here â denotes the direction of resultant vector which is always perpendicular to given two vectors. Here the product gives vector quantity. |
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