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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 aΒ΅w = 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!

off-topic
 Feb 7, 2019
 #1
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Chupa la VERGOTA 

 

 

 

 

 

 

 

 

 

 

 

 

pero tu laienes cortaπŸ˜ŽπŸ˜ŽπŸ˜ŽπŸ˜ŽπŸ˜ŽπŸ˜‚πŸ˜‚πŸ€£πŸ˜‚πŸ€£

 

 

 

🀬🀬🀬🀬🀬

 Feb 25, 2019

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