![Displacement Method for finding Focal Length of Convex Lens Class 12Optics @Kamaldheeriya Maths easy - YouTube Displacement Method for finding Focal Length of Convex Lens Class 12Optics @Kamaldheeriya Maths easy - YouTube](https://i.ytimg.com/vi/QvTNJ-oRsV4/maxresdefault.jpg)
Displacement Method for finding Focal Length of Convex Lens Class 12Optics @Kamaldheeriya Maths easy - YouTube
![A convex lens produced an inverted image magnified three times of an object placed at a distance of 15cm from it. Calculate focal length of the lens. A convex lens produced an inverted image magnified three times of an object placed at a distance of 15cm from it. Calculate focal length of the lens.](https://haygot.s3.amazonaws.com/questions/1667431_1270214_ans_cb7ef8dcaf324c47af47056ceec59cff.jpg)
A convex lens produced an inverted image magnified three times of an object placed at a distance of 15cm from it. Calculate focal length of the lens.
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Calculate the focal length of a convex lens which produces a virtual image at a distance of 50 cm - YouTube
![Focal length, focal distance, dioptric power, curved mirror, lens equation, microscope, photographic objective, focus, beam radius Focal length, focal distance, dioptric power, curved mirror, lens equation, microscope, photographic objective, focus, beam radius](https://www.rp-photonics.com/img/focal_length.png)
Focal length, focal distance, dioptric power, curved mirror, lens equation, microscope, photographic objective, focus, beam radius
![Use the following ray diagram, Fig. to calculate focal length of lens L_2. . | 11 | RAY OPTICS |... - YouTube Use the following ray diagram, Fig. to calculate focal length of lens L_2. . | 11 | RAY OPTICS |... - YouTube](https://i.ytimg.com/vi/jP2q28b4EWE/maxresdefault.jpg)