question_answer

A far-sighted man who has lost his spectacles, reads a book by looking through a small hole in a sheet of paper:

A)  the hole produces an image of the letters at a longer distance

B)  in doing so, the focal length of the eye lens is effectively decreased in doing so, the focal length of the eye

C)  lens is effectively decreased

D)  because in doing so, equivalent focal length remains the same as with spectacles