In absorption meter, which of the following is placed between the chopper and the reference cell?
A. Collimator
B. Filter
C. Photomultiplier tube
D. Attenuator
Answer:D
In absorption meter, which of the following is placed between the chopper and the reference cell?
A. Collimator B. Filter C. Photomultiplier tube D. Attenuator
Explanation: In absorption meter, attenuator is placed between the chopper and the reference cell. A variable thickness aluminium attenuator is used.