Question

What do you mean by optical density?
*the mass / volume ratio of a material *amount of matter occupied in a substance
*specifies the speed of light in a medium *none of the above​

Answer 1

Answer:

answer is absorbance

Explanation:

hope it helps u it is not in the option but giving u a hint

Answer 2

Answer:

the Mass

Explanation:

if if you know what is mass then you know what is optical density try to solve its own