The greatest stress which may be produced in a material such that stress is directly proportional to the strain is known as:: (A) The elastic limit, (B) The proportional limit, (C) The yield strength, (D) Modulus of elasticity
Answer is B. Proportional limit—Magnitude of elastic stress above which plastic deformation occurs.
The greatest stress which may be produced in a material such that stress is directly proportional to the strain is known as the proportional limit.
Reference: PHILLIPS’ SCIENCE OF DENTAL MATERIALS, 12th ed page no 48