The Brainliest Answer!

This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
     When pressure P (= stress = Force/Area) is applied on the surface of the cube, it is compressed. The compression is due to elasticity.  Let Y be the Young's modulus of elasticity of the material of the cube.

When the cube is heated,  it expands due to increase in temperature.  Let α be the coefficient of thermal expansion of the material.  Let L be the side of the cube.

   Y = Stress / Strain
       = P / (ΔL / L)
   ΔL = compression = P L / Y
   ΔL = α L T

  Hence,  α L T = P L / Y 

         =>  T = P / α Y

2 5 2
which class question is this ?
which class r u in? just for information only
12th ....why ?