山东省济南市2020-2021学年高二下学期期末考试物理试题答案

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高二物理参考答案
一、单项选择题:本题共 8 个小题,每小题 3 分,共 24 分。
1B 2A 3C 4D 5B 6C 7D 8A
二、多项选择题:本题包括 4 小题,每小题 4 分,共 16 分。
9BD 10BCD 11BC 12AD
三、非选择题:本题共 6 个小题,满分 60 分。
13(1)ABD (2 分,漏选得 1分,错选不得分) (2)B (2 )
(3)1.16×102(1.14×1021.18×102之间都对) (2 ) 6×1010 (2 )
14(1)BC (2 分,漏选得 1分,错选不得分)
(2) (2 )
(2 )
(2 )
15.解:(1) A 质点开始振动的方向沿 y轴负方向,故第二次出现波峰经历的时间
t1= 解得 T=0.4s ··································(2 )
由图可得 λ=4m m/s ······················(2 )
(2) B 点第一次出现波谷的时刻为 s (2 )
B走过的路程为为 s=5A=50cm····························(2 )
16(1)位移最大时,加速度最大,m所受静摩擦最大。对整体列牛顿第二定律方程有:
·······································(1 )
m有:f=ma ··········································(1 )
µmgf·················································(1 )
解得: ·····························(1 )
(2)对系统,由能量守恒可得:
·······················(2 )
解得: ·····································(2 )
17.解:(1)由题意可知,出射角 r=45o ······················(1 )
········································(2 )
解得: ·······························(1 )
(2) 临界角 ····································(2 )
解得:C=37o
要使光线在 ABAC 界面均发生全反射,需满足
90oθ≥37o
可得:37oθ≤53o
P点做 AB 垂线交于 Q,由几何关系得:
PQ=a
QM=a ···································(3 )
AB 边上的入射角 β=53o
故在 ΔPQN 中,由几何关系可得:
摘要:

高二物理参考答案一、单项选择题:本题共8个小题,每小题3分,共24分。1.B2.A3.C4.D5.B6.C7.D8.A二、多项选择题:本题包括4小题,每小题4分,共16分。9.BD10.BCD11.BC12.AD三、非选择题:本题共6个小题,满分60分。13.(1)ABD(2分,漏选得1分,错选不得分)(2)B(2分)(3)1.16×10-2(1.14×10-2~1.18×10-2之间都对)(2分); 6×10-10(2分)14.(1)BC(2分,漏选得1分,错选不得分)(2)①(2分)③(2分)④(2分)15.解:(1)A质点开始振动的方向沿y轴负方向,故第二次出现波峰经历的时间t1=解得T...

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