Look at the picture.the ray is going through the convex lens,Draw the spreading route of the ray in the picture.

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Look at the picture.the ray is going through the convex lens,Draw the spreading route of the ray in the picture.
Look at the picture.the ray is going through the convex lens,Draw the spreading route of the ray in the picture.

Look at the picture.the ray is going through the convex lens,Draw the spreading route of the ray in the picture.
看画面.射线通过凸透镜,绘制在画面中的光线传播路线.
学过初中物理么,就是四条光线透过凸透镜后会聚
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大概就是这样的,中间那个是凸透镜