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Physics, 18.10.2021 14:00 amyaacrawford86

Chiếu một tia tới nên gương phẳng. Nếu tia tới hợp với mặt gương một góc 30° thì góc phản xạ bằng

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Chiếu một tia tới nên gương phẳng. Nếu tia tới hợp với mặt gương một góc 30° thì góc phản xạ bằng...

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