Question

If a copper plate has an area of 250 cm2 at 00 C, then calculate the area of this plate
at 600. Given: The coefficient of linear expansion of copper = 1.7 x 10-50C-1

Answer 1

Given
Area =250cm²

Cofficiant of linear expansion =1.7x10^-5 /°c
(I took this coefficient of expression I think u want to write same )

Expansion in one direction =
Temp increase xCofficiant of linear expansion

600x1.7x10^-5 = 0.0102cm



This is ur ans hope it will help you

Answer 2

Given :

copper plate area=A₀=250cm²
[i am assuming linear expansion of copper as :1.7x 10⁻⁵ C⁻¹  ]

here is the method :β=2α=2x1.7x 10⁻⁵ C⁻¹

=3.4x10⁻⁵ C⁻¹

ΔT=(60-0)=60°

Aθ=A₀(1+βΔT)

A₆₀=250(1+3.14x10⁻⁵ x60)=250(1+0.001884)=250.471cm²

Area of copper plate at 60 degree=250.471cm²