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nguyenthingoc120031997
2 năm trước
Mặt phản xạ của 2 gương phẳng hướng vào nhau và hợp với nhau một góc a. Tia tới SI song song với gương này và đi đến gương kia.Vẽ đường truyền tiếp theo của tia SI qua hệ hai gương trong các trường hợp sau: a.x=90 độ c.a=45 độ b.a=60 độ d.a=30 độ Có nhận xét gì về tia phản xạ cuối cùng đối với gương 1 trong 2 trường hợp b và d? mọi người vẽ phần d và nhận xét với ạ
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