the focal length of a concavo-convex lens of radius of curvature 5 cm and 10cm is 20cm. what will be its focal length in water.? given aµw = 4/3 .


ive tried solving this but my answer is incorrect, i have a bit of problem with questions like this, like plano-convex , convexo-concave  , because i cant understand what sign conventions to use with these, tho the ones i solved before gave correct answres, i just cant get this one right!


thanks to anyone offering help!


if anyone has a site url which can help me with questions involving two lenses, i'd really appreciate it!


thanks again!

 Feb 7, 2019

Chupa la VERGOTA 













pero tu laienes corta😎😎😎😎😎😂😂🤣😂🤣





 Feb 25, 2019

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