首 页
大学试题
CMS专题
工学
经济学
专升本
法学
教育学
历史学
更多分类
搜索
题库考试答案搜索网 > 题目详情
当前位置:
首页
>
把高2cm的发光棒立于焦距为5cm的凸透镜前,在凸透镜后的光屏上成了4cm高的像,物体离透镜的距离可能是()。
>
题目详情
问题题干
答案解析
相关问题
热门问题
最新问题
问题详情
把高2cm的发光棒立于焦距为5cm的凸透镜前,在凸透镜后的光屏上成了4cm高的像,物体离透镜的距离可能是()。
A、7.5cm
B、12.5cm
C、4.5cm
D、10cm
时间:2022-06-29 07:03
关键词:
物理学科专业知识
初级中学物理
CMS专题
答案解析
A
高2cm的发光棒经凸透镜成4cm高的像,像是放大的实像,根据凸透镜成像规律,当2f>υ>f时,成倒立放大的实像,则物距10cm>υ>5cm,故选A。
相关问题
中学物理实验教学是怎样辅助中学物理教学的。
中学物理实验教学在中学物理实验教学中的作用有哪些?
boost的意思是:help or encourage to increase or improve
eloquent的意思是:fluent or persuasive in speaking or writing
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
最新问题
OR的流行病学含义为()。
ORS液配制后的张力为()
Mainly east 3 or 4 partly cloudy to overcast occasional rain()slowly south moderate or good.
()any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local quarantine officer must be notified immediately.
Should any case or suspected case of quarantinable disease,or any case of eruptive disease or any death be discovered,the local Quarantine Officer must be()immediately.
已知A=40;B=30;C=100;D=50,逻辑“与”运算符为and,“或”运算符为or,“非”运算符为not。计算表达式(A>B+20)or(B+60
Masters are()solely responsible for all damages or accidents of whatever kind resulting from the navigating or handling of their vessels by day or by night.
系统中雷达状态包括Unknown、Operational(or ON)、Failed(or OFF)、Detached。
The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire,()the claimant proves that the fire arose from fault or neglect on the part of the carrier,his servants or agents.
Shutdown price(or point,or rule) 停业价格(或停业点、停业原则)
别人在看