Quang Định

2 năm trước

Chiếu 1 tia sáng từ không khí sang nước theo phương vuông góc với mặt phân cách giữa 2 môi trường.góc khúc xạ có độ lớn là? A.0° B.30° C.60° D.90°

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Typhudiem343

2 năm trước

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d90o

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songuyen05

2 năm trước

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A. 0 độ.

Khi tia tới vuông góc với mặt phân cách tức là góc tới độ thì góc khúc xanh cũng 0 độ.

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Chiếu 1 tia sáng từ không khí sang nước theo phương vuông góc với mặt phân cách giữa 2 môi trường.góc khúc xạ có độ lớn là? A.0° B.30° C.60° D.90°

2 câu trả lời

if you don't wear a helmet , you can't ride your bike => Unless

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

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Chiếu 1 tia sáng từ không khí sang nước theo phương vuông góc với mặt phân cách giữa 2 môi trường.góc khúc xạ có độ lớn là? A.0° B.30° C.60° D.90°

2 câu trả lời

if you don't wear a helmet , you can't ride your bike => Unless

Choose the best answer.I think you should buy _____ pack of mineral water instead. And you can also buy _____ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ______ cookies and soft candies.

Choose the best answer.We should decorate our living room with _____ orange banner. We also need ________ ribbons, balloons, party hats and costume.

Choose the best answer.I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.

Đề thi - đề kiểm tra Xem thêm

Choose the best answer.
I think you should buy ___ pack of mineral water instead. And you can also buy _ snacks such as potato crisps, 3 kilos of mandarins, 2 kilos of apples, 3 bunches of bananas, ____ cookies and soft candies.

Choose the best answer.
We should decorate our living room with _ orange banner. We also need ____ ribbons, balloons, party hats and costume.

Choose the best answer.
I think that ______ cauliflower is not enough for 3 people. Let’s buy one more.