Question

what isthe S.I unit and dimensions of young modulus​

Answer 1

Answer:

SI unit is Pascal and dimensions is ML–1T–2

Answer 2

Answer:

Hello, the SI unit of Young's modulus is Pascal(Pa) or Newton/m^2 (N/m^2).

Explanation:

• Young's modulus is the constant which gives the relationship between stress and strain. So, Young's modulus =stress/strain. Since, strain is the change in length/area/volume so
• strain=∆L/L , where ∆L is change in length and L is original length, hence it has no unit because both numerator and denominator has unit of length i.e, meter so it gets cancelled and stress is pressure so it has unit of Pa hence Young's modulus has unit of Pascal or Newton per meter.

Hope this helps!