Question

4. The unit of Young's modulus is
(a) mm/mm
(b) kg/cm
(c) kg
(d) kg/cm2
(e) kg cm2.​

Answer 1

This is a specific form of Hooke's law of elasticity. The units of Young's modulus in the English system are pounds per square inch (psi), and in the metric system newtons per square metre (N/m2).

Answer 2

The unit of Young's modulus is kg/cm². (Option D)

• The slope of the beginning segment of the curve is Young's modulus.
• When the material reaches particular stress, it begins to deform. It is up to the point when the material's structure is stretching rather than deforming.
• Young's modulus is defined mathematically as the ratio of tensile stress to tensile strain.
• Because strain is dimensionless, it is denoted by Y and has the same unit as tensile stress, which is Pascal, Newton per meter square, and kg/cm².