How to identify lenses and find rough Focal Length of Convex Lens

Simple ways to identify convex and concave lens.
Finding rough focal length of convex lens only. One cannot find rough focal length of concave lens as it does not produce real image

#simplephysics #funphysicsgoa

[dawidsun]

Thank you for the accessible explanation of the process and the differences in the lenses.

[shadowwolf]

thanks bhai very much aapne mere physics practical ke marks bacha liye

[kabir_]

Thanks bro you are helping me for my Practicals!!! Keep it up bro 💪 💯 👌

[johnnypanrike]

Thank you very much. However, the music is a bit loud and distracting, perhaps tone it down a bit in the future?

[Ren-iosx]

can you explain to me how the point where the image is formed clearly makes it the focal length?

[Mrmaster]

Then how can we find rough focal length of concave lens..

[alvinxsingh]

How do I find the focal length of a powered lens such as a -3.00 or +0.5 or example what would I need to do step by step. Thank you!

[shuzuka]

why are there so many wolves here...THANKS A LOT BTW