Question

What will be the value of absorbance, if the absorbed and incident energies are given as 67 J and 109 J respectively?

• A. \( 0.16 \)
• B. \( 0.69 \)
• C. \( 0.61 \)
• D. \( 0.72 \)

Hint:

Remember that absorbance is a dimensionless ratio between 0 and 1.

Answer 1

The Correct Option is C

Absorbance is the ratio of the absorbed energy to the incident energy. $$Absorbance = \frac{Absorbed \, Energy}{Incident \, Energy}$$ Given: Absorbed Energy = 67 J Incident Energy = 109 J $$Absorbance = \frac{67 \, J}{109 \, J} \approx 0.614678...$$ Rounding to two decimal places, the absorbance is approximately 0.61.