Final answer:
A tensile strain is not a negative normal strain; it is the opposite and considered positive since it represents the stretching and elongation of material under stress. Therefore, the correct answer is False.
Step-by-step explanation:
The statement that a tensile strain is considered a negative normal strain is False. Tensile strain occurs when an object is subjected to tensile stress, which causes it to stretch and result in an increase in its length. On the other hand, compressive strain refers to the decrease in the length of an object when it is subjected to compressive stress. Tensile strain is characterized by a positive change in length (ΔL = L - L0), where L is the final length and L0 is the original length of the object before the application of stress. Therefore, a tensile strain is considered positive, as it represents elongation, while a compressive strain is considered negative, representing a contraction of the object under stress.