Question

The coefficient of linear expansions of brass and steel are ????₁ and ????₂
respectively. When we take a brass rod of length ℓ₁ and a steel rod of
length ℓ₂ at 0ºC, then the difference in their lengths (ℓ₂ – ℓ₁) will
remain the same at all temperatures if
(a) ????₁ ℓ₁ = ????₂ ℓ₂ (b) ????₁ ℓ₂ = ????₂ ℓ₁
(c) ????₁² ℓ₂ = ????₂² ℓ₁ (d) ????₁ ℓ₂² = ????₂ ℓ₁²

Answer 1

Answer:

Hello mate ♥

the second option is correct

have a good time

please follow me