Beer Lambert Law

What is the reason for the new transmission intensity que''a I 'on the same wavelength? Using beer lambertlaw
It is a question of physical chemistry that I need answered. Using Beer Lambert law answer.The pure rotational spectrum of HF is taken in a microwave spectrometer insurance. The transmitted radiation intensity I 'at a specific wavelength is at 90% of the incident intensity. If the length the path of the radiation beam is increased by 40% and the concentration of HF in the sample is doubled, while the intensity of radiation incident remains without changes, what is the relationship between new que''a transmitted intensity I 'on the same wavelength?
-Log I '/ I * ab = 'c' = A '=- 0.90 log b''= B' c''1, 40 = 2.0 c'-log''I / I * 1.4 = Ax b 'x 2.0 c' = -2.8 log 0.90 = 0.12812''I / I * = 0.74 = 74%
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