一束具有两种波长[img=17x22]180395f1bb935fc.png[/img]和[img=17x22]180395f1c42fe96.png[/img]的平行光垂直照射到一衍射光栅上，测得波长[img=17x22]180395f1bb935fc.png[/img]的第三级主极大衍射角和[img=17x22]180395f1c42fe96.png[/img]的第四级主极大衍射角均为30°。已知[img=17x22]180395f1bb935fc.png[/img] = 5600 Å，试问光栅常数a+b= 及波长[img=17x22]180395f1c42fe96.png[/img]= 。
A: [img=113x24]180395f1eda55a1.png[/img]，3800 Å
B: [img=113x24]180395f1eda55a1.png[/img]，4200 Å
C: [img=113x24]180395f1fe48891.png[/img]，4200 Å
D: [img=113x24]180395f1fe48891.png[/img]，3800 Å
A: [img=113x24]180395f1eda55a1.png[/img]，3800 Å
B: [img=113x24]180395f1eda55a1.png[/img]，4200 Å
C: [img=113x24]180395f1fe48891.png[/img]，4200 Å
D: [img=113x24]180395f1fe48891.png[/img]，3800 Å
举一反三
- 一束具有两种波长[img=17x22]1803a11548d0e77.png[/img]和[img=17x22]1803a115517c7e0.png[/img]的平行光垂直照射到一衍射光栅上，测得波长[img=17x22]1803a11548d0e77.png[/img]的第三级主极大衍射角和[img=17x22]1803a115517c7e0.png[/img]的第四级主极大衍射角均为30°。已知[img=17x22]1803a11548d0e77.png[/img] = 5600 Å，试问光栅常数a+b= 及波长[img=17x22]1803a115517c7e0.png[/img]= 。 A: [img=113x24]1803a1157cd743d.png[/img]，3800 Å B: [img=113x24]1803a1157cd743d.png[/img]，4200 Å C: [img=113x24]1803a1158ef7660.png[/img]，4200 Å D: [img=113x24]1803a1158ef7660.png[/img]，3800 Å
- 一束具有两种波长λ1和λ2的平行光垂直照射到一衍射光栅上，测得波长λ1的第三级主极大衍射角和λ2的第四级主极大衍射角均为30°。已知λ1 = 5600 Å，试问光栅常数a+b及波长λ2 A: [img=113x24]1803a1160621f64.png[/img]，3800 Å B: [img=113x24]1803a1160f9eafc.png[/img]，4200 Å C: [img=113x24]1803a11617b2c7b.png[/img]，4200 Å D: [img=113x24]1803a116202a439.png[/img]，3800 Å
- 一束具有两种波长λ1和λ2的平行光垂直照射到一衍射光栅上，测得波长λ1的第三级主极大衍射角和λ2的第四级主极大衍射角均为30°。已知λ1 = 5600 Å，试问光栅常数a+b及波长λ2 A: [img=113x24]180344826dd1982.png[/img]，3800 Å B: [img=113x24]1803448275b281e.png[/img]，4200 Å C: [img=113x24]180344827e91a89.png[/img]，4200 Å D: [img=113x24]1803448286a8398.png[/img]，3800 Å
- 设随机变量X的概率密度为f(x)，则f(x)一定满足( ). A: 0≤f(x)≤1 B: [img=183x53]1803b451bb3373a.png[/img] C: [img=133x51]1803b451c807078.png[/img] D: f(+∞)=1
- 原电池（-）Pt︱Fe[img=17x22]1803dd54de61136.png[/img](1 mol·L[img=17x22]1803dd54e7299c0.png[/img]),Fe[img=17x22]1803dd54f0030fb.png[/img](1 mol·L[img=17x22]1803dd54fa39c0d.png[/img])‖Ce[img=17x22]1803dd5502f9d6b.png[/img]( mol·L[img=17x22]1803dd550b82a7d.png[/img]) ,Ce[img=17x22]1803dd55130efd2.png[/img]( mol·L[img=17x22]1803dd551af174c.png[/img]) ︱Pt(+)的电池反应是( )。 A: Ce[img=17x22]1803dd552375aee.png[/img] + Fe[img=17x22]1803dd552ca7541.png[/img] = Ce[img=17x22]1803dd5534dbdef.png[/img] + Fe[img=17x22]1803dd553dc33d1.png[/img] B: Ce[img=17x22]1803dd552375aee.png[/img] + Fe[img=17x22]1803dd553dc33d1.png[/img] = Ce[img=17x22]1803dd5534dbdef.png[/img] + Fe[img=17x22]1803dd552ca7541.png[/img] C: Ce[img=17x22]1803dd5534dbdef.png[/img] + Fe[img=17x22]1803dd553dc33d1.png[/img] = Ce[img=17x22]1803dd552375aee.png[/img] + Fe[img=17x22]1803dd552ca7541.png[/img] D: Ce[img=17x22]1803dd5534dbdef.png[/img] + Fe[img=17x22]1803dd552ca7541.png[/img] = Ce[img=17x22]1803dd552375aee.png[/img] + Fe[img=17x22]1803dd553dc33d1.png[/img]