Question

Derive the expression for absolute error in the theoretical wavelength, including back−substitution.

A) ( |Δλ| = |λ − λ_ₜₑₓₜ_{ₜₕₑₒᵣ_y}| )
B) ( |Δλ| = |λ_ₜₑₓₜ_{ₜₕₑₒᵣ_y} − λ| )
C) ( |Δλ| = |λ + λ_ₜₑₓₜ_{ₜₕₑₒᵣ_y}| )
D) ( |Δλ| = |λ − λ_ₜₑₓₜ_{ₜₕₑₒᵣ_y}|² )