An iris diaphragm is a set of overlapping metal plates that can expand out to allow more light or fold in on each other to reduce the amount of light

asked Dec 20, 2018 181k views

2 votes

by Ocrdu

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5 votes

I believe the answer is True

John Allard answered Dec 20, 2018

5.5k points

3 votes

its false because idk its false i just know just took test lol.Good luck boys!!!

Yolk answered Dec 24, 2018

by Yolk

5.8k points

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