Tensile stress is: A. the strain per unit length. B. the ratio of elastic modulus to strain. C. the ratio of the change in length to the original length. D. the same as force. the applied force per cross-sectional area.

The tensile stress is the same as force. the applied force per cross-sectional area. Hence, option (D) is correct .

The given problem is based on the concept of stress and strain. The force applied on a material per unit area is known as Stress. It is denoted by the symbol .

And due to the applied force, the ratio of change in length to the original length is known as Strain. It is denoted by the symbol .

And the ratio of Stress and Strain is known as Elastic modulus. That is,

So, the tensile stress is obtained as,

So, clearly stress is nothing but the force applied per unit cross sectional area. That is,

Thus, we can conclude that the tensile stress is the same as force. the applied force per cross-sectional area. Hence, option (D) is correct .

Learn more about the tensile stress here:

link

D. the same as force. the applied force per cross-sectional area.

Explanation:

Tensile stress of a material is defined as the ratio of the applied force on the material to its cross sectional area. this is expressed mathematically as;

Tensile stress = Force/cross sectional area

Tensile stress = F/A

Force is measured in newton while cross sectional area is measured in m

Hence the unit of Tensile stress is N/m²