Answer- A- Stress
The unit of young's modulus is the same as that of stress.
According to Hooke’s law:
Stress ∝ Strain
σ ∝ ϵ
σ = Eϵ
where E = Young’s modulus of elasticity.
The unit of young modulus is the same as that of stress (σ) since strain (ϵ) is non – dimensional. Thus, E can be expressed in MPa, GPa N/mm2, N/m2, Pa, etc.
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