Question

Surface area is
A. Scalar
B. Vector
C. Neither scalar nor vector
D. Both scalar and vector

Answer 1

To solve this question we have to know what surface area is. The surface area can be estimated for 3D shapes or solids. The term surface area is characterized as the absolute total surface of the solid object. Since the structure of the three-dimensional items are normally 2D shapes, we should add the regions of the surfaces to get the surface zone of the solid object.

Complete answer:
The complete region of a surface is a scalar. In any case, the differential of the surface zone (a twist, which has direction) is a vector, opposite to the neighborhood surface. we can say, which is perpendicular to the local surface. Surface area is a scalar amount since it has magnitude just and no direction.So the right answer will be scalar which is the option A.

Hence, option A is the correct answer.

Note: We can get confused between the option A, and Option D. because when we consider any spring like object then it does have direction to it. So, we can think that the option number D will be the right answer but here in the question only surface area is mentioned so, only surface area does not have any direction. And we know that scalar quantity contains only magnitude and vector quantity means the object has magnitude and direction both. So, we have to clearly know what is scalar and vector properly to solve these kinds of questions.