
科学初一下册第02章-光和眼
Quiz
•
Science
•
7th Grade
•
Practice Problem
•
Medium
杨翊材老师 杨翊材老师
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如图所示,用一个带有小孔的板遮挡在屏幕与物之间,屏幕上就会形成物的倒像,这种现象叫做小孔成像。下面关于小孔成像的说法中,正确的是( )。
只能成放大的像,不能成缩小的像
所成像的大小跟小孔与屏的距离无关
像与物体相比上下颠倒,左右不对调
像与物体相比上下颠倒,左右也对调
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
雨后晴朗的夜晚,为了不踩到地上的水,下面判断中正确的是( )。
迎着月光走,地上亮处是水;背着月光走,地上暗处是水
迎着月光走,地上暗处是水;背着月光走,地上亮处是水
迎着月光走或背着月光走,地上亮处都是水
迎着月光走或背着月光走,地上暗处都是水
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
墙上挂着一只富有创意的钟,在对面墙上挂着的平面镜里看到挂钟在某一时刻指示的情况如图所示。此时挂钟的实际读数约为( )。
10点38分
1点22分
10点22分
1点38分
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如图所示方框内放有一块镜子,两条平行光射到镜子上经反射后射出,射入的光线与对应射出的光线如图中箭头所示,则这面镜子是( )。
平面镜
凹面镜
凸面镜
不能确定
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如图所示,人眼在A处看见河里B处有一条鱼,若从A处射出一束激光,要使激光能射到鱼的身上,则激光应向( )射出。
B点上方
B点
B点下方
B点左方或右方
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如图a、b中,当入射角增大到一定程度时,会发生全反射的是( )。
只有a图
只有b图
a、b两图都会
a、b两图都不会
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在凸面镜、凹面镜、凸透镜、凹透镜中,对光有会聚作用的是( )。
凸面镜、凸透镜
凹面镜、凸透镜
凹面镜、凹透镜
凸面镜、凹透镜
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