Question

If stress measuring device shows reading as 1 MPa. It is equivalent to:

1. 10 N/mm²
2. 1 M N/mm²
3. 1 k N/mm²
4. 1 N/mm²

Answer 1

Correct Answer - Option 4 : 1 N/mm²

Explanation:

Stress:

• stress is a physical quantity that expresses the internal forces that neighbouring particles of a continuous material exert on each other
• It is internal resistance against external changes like force, bending, Torsion etc.
• It can be both tensile or compressive in nature
• SI unit of stress is N/m2 or Pa.
• Stress can also be measured in N/mm² or MPa (Mega- Pascal).
• So if the stress measuring device shows 1 MPa then it is equivalent to  MPa.