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In the figure shown, forces of equal magnitude are applied to the two ends of a uniform rod. Consider `A` as the cross-sectional area of the rod. For this situation, mark out the incorrect statements.
image
A. The rod is in compressive stress.
B. The numerical value of stress developed in the rod is equal to `F//A`.
C. The stress is defined as internal force developed at any cross section per unit area.
D. none of these

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Correct Answer - D
All of the statements are factual statements. Stress is defined as internal force developed in the system per unit cross sectional area and is not defined as force applied per unit corss section section area although in equilibrium, stress is numerically equal to applied for per unit area.

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