A young boy can adjust the power of his lens between 50 dioptre to 60 diopter if his far. Point is infinity then find his near point ???

A young boy can adjust the power of his lens between 50 dioptre to 60

1.	A young boy can adjust the power of his lens between 50 dioptre to 60 diopter if his far. Point is infinity then find his near point ???
Answer» A young boy can adjust the power of his lens between 50 dioptre to 60 diopter if his far. Point is infinity then find his near point ???