Question:
Beer--Lambert law states that absorbance is proportional to
Beer--Lambert law states that absorbance is proportional to
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Beer--Lambert law:
\[
\boxed{
A=\varepsilon lc
}
\]
Absorbance increases with both concentration and path length.
Updated On: Jul 14, 2026
- Wavelength only
- Concentration only
- Path length only
- Product of concentration and path length
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The Correct Option is D
Solution and Explanation
Step 1: Recall the Beer--Lambert law.
The Beer--Lambert law is
\[
A=\varepsilon lc,
\]
where
- \(A\) = absorbance,
- \(\varepsilon\) = molar absorptivity,
- \(l\) = path length,
- \(c\) = concentration.
Step 2: Determine the proportionality. From the equation, \[ A\propto lc. \] Hence, \[ \boxed{\text{Product of concentration and path length}} \] is the correct answer. Therefore, \[ \boxed{(D)} \] is the correct answer.
Step 2: Determine the proportionality. From the equation, \[ A\propto lc. \] Hence, \[ \boxed{\text{Product of concentration and path length}} \] is the correct answer. Therefore, \[ \boxed{(D)} \] is the correct answer.
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