उस सामग्री गुण (material property) का चयन करें जिसे दृढ़ता (Toughness) का यांत्रिक विपरीत या विलोम माना जाता है।

Consider the following statements: 1. The maximum stress at which a material fractures under a large number of stress reversals is called the endurance limit. 2. The absorption of energy at high stress without rupture is called toughness. Which of the above statements is/are correct?

Which mechanical property of a metal represents its ability to resist scratching, wear, abrasion, and penetration?