Ultimate strength of a material is expressed in which of the following units?

Ultimate strength is a material property that indicates the maximum stress a material can withstand before failure or fracture occurs. It is a critical measurement in engineering and materials science, typically used to assess how materials behave under load.

The ultimate strength of a material is expressed in terms of pressure, which is defined as force per unit area. The standard unit of pressure in the International System of Units (SI) is the pascal (Pa), where one pascal represents one newton per square meter. Therefore, kilopascals, which are equivalent to 1,000 pascals, serve as a practical and commonly used unit to express ultimate strength because many materials experience ultimate strengths that are much larger than a single pascal.

This makes kilopascals a suitable choice for indicating the ultimate strength, as it allows for a convenient scale to facilitate the comparison of different materials. In summary, ultimate strength is measured in kilopascals, making it the appropriate unit for expressing this property.