CBSE Class 11-science Answered
Is area a scalar quantity or vector? how small area is a vector quantity?
Asked by AOM SAI | 28 Dec, 2015, 07:29: PM
Expert Answer
The magnitude of area is a scalar quantity.
But any element of area is not completely defined by its magnitude alone. For that we must know the orientation of that area element.
For example, area of a parallelogram is given as 
, where 
and 
are its two sides. The unit vector of area is normal to both and . So the area element is correctly defined only if its magnitude and direction is defined. Therefore, it is a vector quantity.
, where and are its two sides. The unit vector of area is normal to both and . So the area element is correctly defined only if its magnitude and direction is defined. Therefore, it is a vector quantity.
Answered by Yashvanti Jain | 29 Dec, 2015, 10:43: AM
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