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Low frequency red light is used in the dark rooms because it does not expose the film.This is because the red light had a low ?
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1 vote
Low frequency red light is used in the dark rooms because it does not expose the film.This is because the red light had a low ?

User Dbz
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1 Answer

4 votes

Low energy i pretty sure thats right


User Fatih Bulut
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6.5k points
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