ray-diagram
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| What is the ray diagram of concave lens when object is placed at focus? |
|
1 | 371 | July 1, 2019 |
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| What is the ray diagram of concave lens when object is placed at focus? |
|
1 | 371 | July 1, 2019 |