The formula to calculate the Focal Length of Concave Lens is:
\[ f_{\text{concave lens}} = \frac{u \cdot v}{v + u} \]
Where:
Focal Length of Concave Lens is the distance between the center of the lens and the focal point, which is the point where parallel rays of light converge after passing through the lens.
Let's assume the following values:
Using the formula:
\[ f_{\text{concave lens}} = \frac{0.9 \cdot 0.27}{0.27 + 0.9} \]
Evaluating:
\[ f_{\text{concave lens}} = 0.207692307692308 \text{ m} \]
The Focal Length of Concave Lens is 0.207692307692308 m.
| Object Distance (m) | Image Distance (m) | Focal Length of Concave Lens (m) |
|---|---|---|
| 0.8 | 0.27 | 0.201869158879 |
| 0.9 | 0.27 | 0.207692307692 |
| 1 | 0.27 | 0.212598425197 |