(达州专版)2019中考物理第一单元声和光第3课时光的折射透镜及其应用复习课件.ppt

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第一单元 声和光,学生用书P9,第3课时 光的折射 透镜及其应用,同一平面,斜射入,不改变,小于,增大,蓝,色散,红,绿,发散,会聚,可逆的,焦距,正立,倒立,暗,同一高度,厚,凸,薄,强,弱,前,后,凹,胶片,焦距,凸透镜(镜头),学生用书P10,D,B,【答案】 如答图所示。,不能,色散,【答案】 如答图所示。,照相机,缩小,大,右,幻灯机(或投影仪),虚,实,远离,D,【正解】 乙 正立、放大、虚 放大镜,学生用书P11,B,A,C,D,C,D,C,变小,0.05,凹,近,会聚,凸透镜,红外线,小于,会聚,【答案】 略,会聚,同一高度,投影仪,放大,【答案】 如答图所示。,D,7.5 cmf10 cm,缩小,【答案】 如答图所示。,【答案】 如答图所示。,

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