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初二物理“光的折射”讲述两种放大像：一种是放在凸透镜的焦距一两倍焦距之间，另一种是放在凸透镜焦点之内．虽然这两种像都是放大的胆它们之间却有几方面的不同：１．俗的虚实不同前一种放大像是实像，后一种放大像是虚像；２．像的倒正不同前一种放大像是倒立的，后一种放?
The first two physical “reflection of light” tells about two kinds of zoom-in images: one is that the focal length of the convex lens is between two focal lengths, and the other is placed within the focal point of the convex lens. Although both types of images are enlarged, there are several differences between them: 1. Vulgarity is different from the previous one. The latter is a real image. The latter is a virtual image. The difference between the image is different from the previous one.