Nobody seems to be answering these in the PHYSICS group, so I hope some one in the maths group wud b able to help☺

"Why is the radius of curvature of the surface of sun glasses kept the same ???"
and
"Two lenses of focal length +20 cm and -20cm are separated by a distance of 10 cm. Find the nature of the combines lenses."

Question

Nobody seems to be answering these in the PHYSICS group, so I hope some one in the maths group wud b able to help☺

"Why is the radius of curvature of the surface of sun glasses kept the same ???"
and
"Two lenses of focal length +20 cm and -20cm are separated by a distance of 10 cm.  Find the nature of the combines lenses."

anonymous · Answer

I know that more curvature would cause a distorted view for the sun glasses

ash2326 · Answer

@Harkirat  ask @JamesJ  to help you, he'd surely help. Would you please delete this post ?
Thanks

jamesj · Answer

Your first question has been answered in Physics.

As a general policy, please do not post Physics questions here.  If you post something there and need help, come and find someone in Mathematics chat to help you.

anonymous · Answer

Ok thanks