题型：作图题 题类：常考题 难易度：容易
河北省唐山市丰润区2020-2021学年八年级上学期物理期末考试试卷
|
入射角i |
0° |
10° |
20° |
30° |
40° |
41.2° |
41.8° |
42° |
|
折射角r |
0° |
15.2° |
30.9° |
48.6° |
74.6° |
81° |
90° |
/ |
|
反射能量 |
5% |
7% |
26% |
43% |
77% |
84% |
100% |
100% |
试题篮
