Test Academy | The coefficient of linear expansion of brass and steel are α₁ and α₂. If we take a brass rod of length L₁ and steel rod of length L₂ at 0°C , their difference in length ( L₂-L₁ ) will remain the same at any temperature if α₁L₂ = α₂L₁, α₁L₂² = α₂L₁², α₁²L₁ = α₂²L₂, α₁L₁ = α₂L₂

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The coefficient of linear expansion of brass and steel are α₁ and α₂. If we take a brass rod of length L₁ and steel rod of length L₂ at 0°C , their difference in length ( L₂-L₁ ) will remain the same at any temperature if

Options :

α₁L₂ = α₂L₁
α₁L₂² = α₂L₁²
α₁²L₁ = α₂²L₂
α₁L₁ = α₂L₂

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