A short sighted person uses lens for observing object at a distance of 200cm but he can see an object at a distance of 20cm without any use of lens . Find the focal length and nature of correcting lens required. Also find the power of correcting lens. Please have a better answer
Answers
Answered by
1
Focal length is 20cm.The nature of the lens is concave lens.Power is -5 .
Similar questions