II. BÀI TẬP VẬN DỤNG
Câu 1: Trên hình vẽ một tia sáng SI chiếu lên một gương phẳng. góc tạo bới tia SI với mặt gương phẳng bằng 300
a. Hãy vẽ tiếp tia phản xạ
b. Tính góc phản xạ
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Câu 2: Chiếu một tia sáng SI lên một gương phẳng
a. Vẽ tia phản xạ
b. Vẽ một vị trí đặt gương để thu được tia phản xạ theo phương nằm ngang từ trái sang phải.
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Câu 3: Cho 3 chùm tia hội tụ, phân kì, song song lần lượt được chiếu vào gương phẳng (M). Vẽ hình mỗi trường hợp. Dựa vào hình vẽ này, ta có thể rút ra những kết luận gì?
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Câu 4: Một gương phẳng đặt trên mặt bàn nằm ngang, gần một bức tường thẳng đứng. Dùng đèn pin chiếu một tia sáng lên gương sao cho tia phản xạ gặp bức tường. Hãy vẽ hai tia tới cho hai tia phản xạ gặp bức tường ở cùng một điểm M.
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Câu 5: Cho gương phẳng (M), tia sáng tới SI đến gương với góc i = 500.
a. Tính góc hợp bởi tia phản xạ và gương phẳng (M)
b. Nếu góc tới i = 00, góc phản xạ là bao nhiêu? Từ đó rút ra kết luận gì?
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Câu 6: Cho các hình a, b, c, d hãy:
1. Vẽ các tia phản xạ (hoặc tia tới)
2. Xác định độ lớn của góc tới i (hoặc góc phản xạ i’)
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Câu 7: Cho các hình vẽ sau, biết I là điểm tới, SI là tia sáng truyền tới gương phẳng, IR là tia phản xạ trên gương. Hãy:
1. Vẽ pháp tuyến với gương tại điểm tới
2. Xác định vị trí của gương
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