Question

the dimensions of stain are?​

Answer 1

Answer:

Strain = Change in length original lenth. Strain is dimensionless. Strain is a type of deforming force which is opposite to stress. Stress has a dimensional formula but strain strain does not.

Explanation:

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Answer 2

Answer:

The dimension of longitudinal strain is 1. Since it's the ratio of two same physical quantity i.e. the ratio of change in the length to the original length, hence it's unitless quantity this implies it's dimensionless as well.

Although when we talk about the shear strain the unit of that strain is 'radian',yet it's dimensionless because it's secondary unit or derived unit which is again the ratio of two same quantity hence it's dimensionless but not unitless.

Hope you understood.