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Paralel beam of rays enters in to lasticplbead of 2.50cm with 1.44. i need focus distance

Paralel beam of rays enters in
to lasticplbead of 2.50cm with 1.44. i need focus distance

Grade:9

1 Answers

Khimraj
3007 Points
2 years ago
there is no proper meaning of question.
please repost it.

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