Physics, 22.07.2021 17:30 stepromero01
Một thấu kính hội tụ có tiêu cụ f=20cm tính độ tụ của thấu kính
Answers: 3
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Một thấu kính hội tụ có tiêu cụ f=20cm tính độ tụ của thấu kính...
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