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Health What Is Social Bullying? Discussion Comments By anon265003 — On Apr 30, 2012 So does a concave mirror magnify the object? By anon247581 — On Feb 14, 2012 I'm confused about the difference between convex and concave given your examples. You say that "A good example of a ...
反光镜 fǎnguāng jìng Main English Definitionreflector(typicallyconcave, as in atorch);mirror(typicallyplaneorconvex) Simplified Script反光镜 Traditional Script反光鏡 Pinyinfǎnguāng jìng Effective Pinyin (After Tone Sandhi)Same Zhuyin (Bopomofo)ㄈㄢˇㄍㄨㄤ ㄐㄧㄥˋ ...
A 2cm high object is placed 3cm in front of a concave mirror. If the image is 5cm high and virtual, what is the focal length of the mirror? A 2.50 cm high object is placed 3.5 cm in front of a concave mirror. If the image is 5.0 c...
At what distance in front of a concave mirror must an object be placed so that the image and object are the same size?A.a focal lengthB.half a focal lengthC.twice a focal lengthD.less than half focal length的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shu
Answer to: There is a 12 mm high object that is 10 cm from a concave mirror with a focal length of 17 cm. (a) Where (B) how high, and (C) what type...
A spherical mirror and a spherical lens each have a focal length of, -15 cm. The mirror and the lens are likely to be : (a) both concave. (b) both convex. (c) the mirror is concave but the lens is convex. (d) the mirror is convex but the lens is concave. View ...
A. Convex lens B. Concave lens C. Plane mirror D. Prism 相关知识点: 试题来源: 解析 B。解析:近视是由于眼睛的晶状体对光线的会聚能力太强,需要用凹透镜来矫正。选项 A 凸透镜用于矫正远视眼;选项 C 平面镜主要用于反射;选项 D 棱镜用于光的色散等。反馈...
Is concave mirror converging or diverging? We find that the rays reflect from the concave mirror, and according to the reflection laws the rays converge to a point on the principal axis. The image formed is a real image and this image is formed on the same side of the mirror. Hence, th...
What is difference between concave mirror and concave lens? A concave mirror is opaque whereas a concave lens is transparent. A concave mirror can form both real, inverted images of various sizes and virtual, erect and enlarged images depending on the position of the object whereas a concave le...