B. It can form a virtual image. C. It always makes objects appear smaller. D. It can focus light. 相关知识点: 试题来源: 解析 C。凹面镜可以形成实像和虚像,也能聚焦光线,选项 A、B、D 正确;凹面镜不一定总是使物体看起来更小,有时也能放大物体,所以选项 C 错误。反馈 收藏 ...
A. Between the focus and the mirror B. Beyond the center of curvature C. At the focus D. Between the focus and the center of curvature 相关知识点: 试题来源: 解析 D。当物体位于凹面镜的焦点和曲率中心之间时,会产生实像且是倒立的。选项 A 产生虚像。选项 B 产生缩小的实像。选项 C 不成像...
the small-size concave mirrors adjacent to each other being joined together through the joining surfaces, each of the joining surfaces and a focus (0, Fig. 6) of the large-size concave mirror 120 being on one plane so that the joining surfaces do not face to the focus (0) of the larg...
Yes, a concave mirror acts as a positive lens. The focal length of a concave mirror is positive, just like the focal length of a convex lens. There... See full answer below.Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a qu...
Plane mirrors and convex mirrors always form a virtual image of an object.
An optical arrangement for imaging a relatively small or slit- like surface is disclosed which includes a concave mirror or a concave grating. Astigmatism is corrected for the concave mirror or concave grating by mounting a slab waveguide at the surface which is to be imaged or at the image ...
此外,还有《天堂的阴影》与《终结之诗》两部著名诗集的完整英译,但我尚未购得。英译与汉译对照阅读后,我都觉得汉译多警句却稍显混乱破碎,而英译则更流畅,容易懂。以下本萌新对二译本间的似有差异之处与值得注意之处草率地做了加黑处理,大佬们自可对照(因为我不懂西语。。。谷歌机翻毕竟不靠谱,故在一些颇...
Question. An object is placed at a distance of 40 cm from a concave mirror of focal length 15 cm. If the object is displaced through a distance of20 cm towards the mirror, the displacement of the image will be b(a)30 cm away from the mirror(b)36 cm away from the mirror(c) 30 ...
We describe the accurate measurement of the radius of curvature of a concave mirror in a Fabry-Perot interferometer with a finesse of 78,100. The radius of curvature of the concave mirror is determined by measuring the free spectral range and the transverse-mode range with the frequency response...
Pleaseverifytheouterboundoftheuniverseisaconcavemirror(FocusontheGAMA202627,attachedphotoandcoordinates)请验证宇宙的外边界是一个凹面镜(焦点在GAMA202627,附照片和坐标)DearProf.:Sorrytobotheryou.Ibelievedthat“Theethermodels”isatheorywhichincludesontemporaryphysics;(Contemporaryphysicscalledthecosmicvacuumas“Vacuum...