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复旦教育出版社湖南分社大学物理实验下网上测试答案

复旦教育出版社湖南分社大学物理实验下网上测试答案
复旦教育出版社湖南分社大学物理实验下网上测试答案

硬磁材料的磁滞回线,磁滞损耗:()

A.较宽,较小

B.较宽,较大

C.较窄,较小

D.较窄,较大

(提交答案:B 判题:√ 得分:10分)

在测量铁磁材料的磁滞回线实验中,软磁材料不是用来制造以下材料设备的:()

A.变压器

B.电机

C.交流磁铁

D.永磁体

(提交答案:D 判题:√ 得分:10分)

LC并联谐振时,LC并联电路两端的阻抗为

A.最大

B.最小

C.在二者之间

(提交答案:A 判题:√ 得分:10分)

LC并联谐振时,LC并联电路两端与外接电阻两端相位

A.相同

B.相反

C.无关联

(提交答案:A 判题:√ 得分:10分)

下面哪个选项与测量声速的实验无关

A.实验利用v=s/t测量声速

B.共振干涉法

C.相位比较法

D.本实验利用波长和频率的乘积来测量声速

(提交答案:A 判题:√ 得分:10分)

声速测量实验中,将换能器S1和S2的信号分别接入示波器CH1和CH2通道,换能器系统已处于谐振状态,示波器选择X-Y工作方式,在示波器上看到的李沙育图形,一般情况下是_________,若希望在示波器上仅观察到Y向信号(竖直亮线),可将

______________。

A.水平直线;示波器CH1通道输入信号接地

B.水平直线;示波器CH2通道输入信号接地

C.椭圆;示波器CH1通道输入信号接地

D.椭圆;示波器CH2通道输入信号接地

(提交答案:C 判题:√ 得分:10分)

拍摄全息图时,物光和参考光的夹角增大,干涉条纹如何改变?

B.变疏

C.不变

(提交答案:A 判题:√ 得分:10分)

全息照相与普通照相的区别是( )

A.全息照相记录下了物体光波的振幅信息,而普通照相则没有.

B. 全息照相同时记录下物体光波振幅和相位的信息,而普通照相仅仅是记录了物体光波的振幅信息.

C.全息照相是记录物体光波的相位信息,而普通照相则是记录物体光波光强的信息.

(提交答案:B 判题:√ 得分:10分)

调节平行光管光轴与望远镜平行时,可通过在已调好的望远镜中观察狭缝像是否被中央横丝上下均分来判断,此时应调节:

A.望远镜光轴高低调节螺丝

B.载物台调平螺丝

C.平行光管光轴高低调节螺丝

(提交答案:C 判题:√ 得分:10分)

调节分光计望远镜目镜,应使视场中:

A.绿十字像清晰

B.分划板叉丝清晰

C.A和B都不对

(提交答案:B 判题:√ 得分:10分)

硬磁材料的磁滞回线,磁滞损耗:()

A.较宽,较小

B.较宽,较大

C.较窄,较小

D.较窄,较大

(提交答案:B 判题:√ 得分:10分)

铁磁材料的磁导率是:()

A.固定不变的

B.随磁场强度H成线性关系

C.磁场强度H小时,随磁场强度H增加而增加,磁场强度H大时,随磁场强度H增加而减小

D.磁场强度H大时,随磁场强度H增加而增加,磁场强度H小时,随磁场强度H增加而减小

(提交答案:C 判题:√ 得分:10分)

LC串联谐振时,LC串联电路两端与外接电阻两端相位

A.相同

B.相反

(提交答案:A 判题:√ 得分:10分)

LC串联和并联谐振时,满足公式:

A.W0L=1/W0C

B.W0C=1/W0L

C.W0C=1/L

(提交答案:A 判题:√ 得分:10分)

下列哪个说法是正确的:

A.超声声速的理论值是固定的,与温湿度和气压无关

B.接收端和发射端靠得越近实验效果越好

C.在相位比较法测声速的实验中,两次出现椭圆时记下实验数据

D.处理实验数据时要使用逐差法

(提交答案:D 判题:√ 得分:10分)

下列选项中,哪个不是超声波的特点:

A.声波的波长比较短

B.声波在传播过程中易发散

C.声波的频率比较高

D.声波的定向发射性能比较好

(提交答案:B 判题:√ 得分:10分)

再现光照射全息图时,透射光波中表示原物立体虚像的是( )

A.

B.

C.

望远镜已调到与分光计中心轴垂直并适合观察平行光,此时调节平行光管发平行光(钠光灯做光源),当视场中满足下列哪个选项,说明已调好:

A.绿十字像清晰

B.分划板叉丝清晰

C.黄色狭缝像清晰

(提交答案:A 判题:╳ 得分:0分)

在测量铁磁材料的磁滞回线实验中,磁滞现象是指:()

A.磁感应强度B的变化滞后于磁场强度H的变化

B.磁场强度H的变化滞后于磁感应强度B的变化

C.磁感应强度B滞后于磁场强度H

D.磁场强度H滞后于磁感应强度B

(提交答案:A 判题:√ 得分:10分)

全息照相实验中,改变物光和参考光到达干板处的光强比,不能通过下列哪个选项来实现?

A.改变物光扩束镜到被摄物的距离

B.改变参考光扩束镜到干板的距离

C.提高激光器的功率

(提交答案:C 判题:√ 得分:10分)

全息照相中,再现的立体像( )

A.一定是实像

B.一定虚像

C.可能是实像,也有可能是虚像.

(提交答案:B 判题:√ 得分:10分)

为使望远镜观察平行光,先调目镜,然后调物镜使视场中:

A.看到清晰的绿十字像且与叉丝无视差

B.看到清晰的黄色狭缝像

C.分划板叉丝清晰

(提交答案:A 判题:√ 得分:10分)

分光计消除偏心差利用()

A.阿贝望远镜

B.平行光管

C.读数显微镜

D.双游标

(提交答案:D 判题:√ 得分:10分)

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