Question

If the transmittance of a sample is \(10\%\), the absorbance is

• A. \(0.1\)
• B. \(1\)
• C. \(10\)
• D. \(0\)

Hint:

Absorbance and transmittance are related by \[ \boxed{ A=-\log_{10}(T) } \] where \(T\) is expressed as a decimal (not as a percentage).

Answer 1

The Correct Option is B

Step 1: Recall the relation between absorbance and transmittance. Absorbance is given by \[ A=-\log_{10}(T), \] where \(T\) is the transmittance expressed as a fraction.

Step 2: Calculate the absorbance. Given, \[ T=10\%=0.1. \] Therefore, \[ A = -\log_{10}(0.1) = 1. \] Hence, \[ \boxed{A=1.} \] Therefore, \[ \boxed{(B)} \] is the correct answer.