His distance of distinct vision at 25 cm is normal. By using a concave lens of focal length 10 m he will be able to see distant objects.
P =1 /f
=1/ -10 m
=-0.1 D
His distance of distinct vision at 25 cm is normal. By using a concave lens of focal length 10 m he will be able to see distant objects.
P =1 /f
=1/ -10 m
=-0.1 D
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