2026届河北省秦皇岛市青龙满族自治县实验中学等校高三模拟预测物理试题

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物理

本试卷共8页,满分100分,考试用时75分钟。

注意事项:

1.答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。

2.回答选择题时,选出每小题答案后,用2B铅笔把答题卡上对应题目的答案标号涂黑。如需改动,用橡皮擦干净后,再选涂其它答案标号。回答非选择题时,将答案写在答题卡上,写在本试卷上无效。

3.考试结束后,将本试卷和答题卡一并交回。

一、单项选择题:本题共7小题,每小题4分,共28分。在每小题给出的四个选项中,只有一项符合题目要求。

1.“羲和号”卫星通过分析太阳光谱中的特定谱线来研究太阳活动。太阳光谱中某条谱线对应光子的能量与氢原子从能级跃迁到能级时辐射的光子能量相同。氢原子的能级图如图所示,则该谱线对应的光子能量为

image

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2.位于点的波源沿轴方向振动,在位于轴正负半轴的两种介质I、II中形成的机械波波形如图所示,下列说法正确的是

image

A.波在介质中传播的周期大于在介质中传播的周期

B.波在介质中传播的速度大于在介质中传播的速度

C.波在介质中传播的周期小于在介质中传播的周期

D.波在介质中传播的速度小于在介质中传播的速度

3.某静电场的电场强度随变化关系如图所示,规定沿轴正方向为正,若点的电势为0,则处的电势为page number 0

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image

A. B. C. D.

4.宇宙中有两颗恒星组成双星系统,两星围绕它们连线上的某点做匀速圆周运动,两星间的距离约为23 AU(1 AU为地球到太阳的距离),两星做匀速圆周运动的周期约为80年,则该双星系统的总质量与太阳质量之比约为

A.2∶1 B.1∶2 C.2∶3 D.3∶2

5.杂技团进行高空抛接表演,演员将一只长为的空心竖直圆筒、以的初速度竖直向上抛出。经过后,演员在同一位置以相同的初速度竖直向上抛出一小球,忽略空气阻力,重力加速度取。则小球抛出后,经过多长时间能从圆筒上端穿出

A. B. C. D.

6.某光学组件可简化为如图所示的等腰三角形玻璃砖,两腰上的两点连线平行于,且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,,到的距离为,一束单色光从玻璃砖上的点垂直边入射,已知玻璃砖的折射率为,光在真空中传播的速度为,则该单色光在玻璃砖内传播的时间为

image

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7.如图所示,匝数匝、面积、电阻eqWmf183GmgAAAAAAAEAEoAEBCQAAAADwWwEACQAAA8oBAAACAJYAAAAAAAUAAAACAQEAAAAFAAAAAQL///8ABQAAAC4BGQAAAAUAAAALAgAAAAAFAAAADAKgAUAECwAAACYGDwAMAE1hdGhUeXBlAAAgABIAAAAmBg8AGgD/////AAAQAAAAwP///8b///8ABAAAZgEAAAUAAAAJAgAAAAIFAAAAFAJgAT4CHAAAAPsCgP4AAAAAAACQAQAAAAAAAgAQVGltZXMgTmV3IFJvbWFuAPjQkwMD7P51sJAEdtsK/3UEAAAALQEAAAkAAAAyCgAAAAABAAAAMQCiABwAAAD7AoD+AAAAAAAAkAEAAAChAAIAEFRpbWVzIE5ldyBSb21hbgD40JMDA+z+dbCQBHbbCv91BAAAAC0BAQAEAAAA8AEAAAkAAAAyCgAAAAABAAAA2QAAAwUAAAAUAmABOgAcAAAA+wKA/gAAAAAAAJABAQAAAAACABBUaW1lcyBOZXcgUm9tYW4A+NCTAwPs/nWwkAR22wr/dQQAAAAtAQAABAAAAPABAQAJAAAAMgoAAAAAAQAAAHIAAAMFAAAAFAJgATwBHAAAAPsCgP4AAAAAAACQAQAAAAEAAgAQU3ltYm9sAHZrvwB2QAAAAPjQkwMD7P51sJAEdtsK/3UEAAAALQEBAAQAAADwAQAACQAAADIKAAAAAAEAAAA98gADlgAAACYGDwAiAUFwcHNNRkNDAQD7AAAA+wAAAERlc2lnbiBTY2llbmNlLCBJbmMuAAUBAAcLRFNNVDcAARNXaW5BbGxCYXNpY0NvZGVQYWdlcwARBVRpbWVzIE5ldyBSb21hbgARA1N5bWJvbAARBUNvdXJpZXIgTmV3ABEETVQgRXh0cmEAE1dpbkFsbENvZGVQYWdlcwARBsvOzOUAEgAIIS8n8l8hjyEvR19BUPIfHkFQ9BUPQQD0RfQl9I9CX0EA9BAPQ19BAPIfIKXyCiX0jyH0EA9BAPQPSPQX9I9BAPIaX0RfRfRfRfRfQQ8MAQABAAECAgICAAIAAQEBAAMAAQAEAAUACgEAEAAAAAAAAAAPAQIAg3IAAgSGPQA9AgCIMQACAIGpAwAACgAAACYGDwAKAP////8BAAAAAAAcAAAA+wIQAAcAAAAAALwCAAAAhgECAiJTeXN0ZW0AdbUGigAAAAoABgAAAF0uZhy1BooA2wr/dQQAAAAtAQAABAAAAPABAQADAAAAAAA=的圆形线圈固定在磁场中,线圈平面与磁场方向垂直,磁场的磁感应强度随时间的变化规律为,其中,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。定值电阻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,电表均为理想交流电表,二极管为理想二极管,下列说法正确的是

image

A.线圈产生的电动势最大值为 B.电流表的示数为page number 1

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C.电压表的示数为 D.定值电阻的电功率为

二、不定项选择题:本题共3小题,每小题6分,共18分,在每小题所给的四个选项中有多项符合要求,全部选对的得6分,选对但选不全的得3分,有选错的得0分。

8.如图所示,竖直静止放置、粗细均匀、导热性能良好的玻璃管上端开口,管内用水银封闭一定质量的理想气体,现改变环境温度,对于管内气体,下列说法正确的是

A.升高环境温度,气体内能的增加量小于其吸收的热量

B.升高环境温度,气体内能的增加量大于其吸收的热量

C.降低环境温度,气体内能的减少量小于其放出的热量

D.降低环境温度,气体内能的减少量大于其吸收的热量

9.某科研小组研发的雪橇无人机采用氢燃料驱动,尾部喷射高压气流在水平雪面滑行,喷气方向可根据需要调整。整机含载荷总质量,发动机额定功率,雪橇与雪面间的动摩擦因数,重力加速度。下列说法正确的是

A.雪橇无人机沿直线行驶能达到的最大速度为

B.雪橇无人机以的加速度启动做直线运动,匀加速能维持的时间为13.3 s

C.雪橇无人机以的加速度启动做直线运动,时发动机的功率为

D.雪橇无人机以的速度沿半径为的弯道转弯时,喷气提供的推力为

10.如图所示为某同学设计的模拟远距离输电示意图,均为理想变压器,原线圈输入正弦式交流电,电压eqWmf183GmgAAAAAAAAAJQAIACQAAAABRVQEACQAAA/wBAAACALsAAAAAAAUAAAACAQEAAAAFAAAAAQL///8ABQAAAC4BGQAAAAUAAAALAgAAAAAFAAAADAJAAgAJCwAAACYGDwAMAE1hdGhUeXBlAABgABIAAAAmBg8AGgD/////AAAQAAAAwP///6b////ACAAA5gEAAAUAAAAJAgAAAAIFAAAAFALjAUQBHAAAAPsCIP8AAAAAAACQAQAAAAAAAgAQVGltZXMgTmV3IFJvbWFuAPjQkwMD7P51sJAEdtsK/3UEAAAALQEAAAoAAAAyCgAAAAACAAAAMDIBB8ABBQAAABQCgAFfAxwAAAD7AoD+AAAAAAAAkAEAAAAAAAIAEFRpbWVzIE5ldyBSb21hbgD40JMDA+z+dbCQBHbbCv91BAAAAC0BAQAEAAAA8AEAAA8AAAAyCgAAAAAFAAAAMjUwViwAwADAABQBGgEAAwUAAAAUAoABFgAcAAAA+wKA/gAAAAAAAJABAQAAAAACABBUaW1lcyBOZXcgUm9tYW4A+NCTAwPs/nWwkAR22wr/dQQAAAAtAQAABAAAAPABAQAKAAAAMgoAAAAAAgAAAFVUbwcAAwUAAAAUAoABMwIcAAAA+wKA/gAAAAAAAJABAAAAAQACABBTeW1ib2wAdmu/AHZAAAAA+NCTAwPs/nWwkAR22wr/dQQAAAAtAQEABAAAAPABAAAJAAAAMgoAAAAAAQAAAD0AAAO7AAAAJgYPAGwBQXBwc01GQ0MBAEUBAABFAQAARGVzaWduIFNjaWVuY2UsIEluYy4ABQEABwtEU01UNwABE1dpbkFsbEJhc2ljQ29kZVBhZ2VzABEFVGltZXMgTmV3IFJvbWFuABEDU3ltYm9sABEFQ291cmllciBOZXcAEQRNVCBFeHRyYQATV2luQWxsQ29kZVBhZ2VzABEGy87M5QASAAghLyfyXyGPIS9HX0FQ8h8eQVD0FQ9BAPRF9CX0j0JfQQD0EA9DX0EA8h8gpfIKJfSPIfQQD0EA9A9I9Bf0j0EA8hpfRF9F9F9F9F9BDwwBAAEAAQICAgIAAgABAQEAAwABAAQABQAKAQAQAAAAAAAAAA8BAgCDVQAPAAMAGwAACwEADwECAIgwAAAPAAEBAAoPAQIEhj0APQIAiDIAAgCINQACAIgwAAIAmATvAgCBVgACAIIsAAIAg1QADwADABsAAAsBAA8BAgCIMgAADwABAQAAAAoAAAAmBg8ACgD/////AQAAAAAAHAAAAPsCEAAHAAAAAAC8AgAAAIYBAgIiU3lzdGVtAHW1BooAAAAKAAYAAAABWWZrtQaKANsK/3UEAAAALQEAAAQAAADwAQEAAwAAAAAA,匝数比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,匝数比。用户1消耗的功率为,用户2获得的电压为、消耗的功率。输电线电阻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,其它电阻不计,下列说法正确的是

image

A.原线圈中的电流大小为 B.输电线上损耗的功率为

C.原线圈输入的功率为 D.匝数比

三、实验题:本题共2小题,共16分。

11.(8分)(1)某同学采用如图1所示的装置探究“质量一定时,物体运动的加速度与它所受合外力的关系”。器材如下:倾角可以调节的光滑斜面、带有遮光片的小车、光电计时器(配有两个光电门)。page number 2

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