Lens Topic Questions
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We found 25 unanswered questions associated with the 'Lens' topic. Displaying results 21 - 30.
I take a concave lens and place an object left to it, before focus (ray diagram).when ray is taken?
... from it parallel to principal axis and another ray passing from focus,and are allowed to extend backwards,the image formed is larger than the ...
Posted 3+ months ago | 0 answers | 
| Open
Can I change the lens of a presbyopic glasses into a normal lens?
Posted 3+ months ago | 0 answers | | Open
Related topics: glasses, lens, normal, eyeglasses
I have -20 diopter and -21 diopter in my left and right eye respectively. Can I wear contact lenses?
I have -20 diopter and -21 diopter in my left and right eye respectively. Can i wear contact lenses. Is there is any problem related to lens ...
Posted 3+ months ago | 0 answers | | Open
Related topics: lens, eye, left, right, problem, lense, wear, contact, eyes