A person cannot see distinctly at the distance less than one metre. Calculate the power of the lens that he should use to read a book at a distance of 25 Cm
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Power= 1/f ( focal length in metre)
Focal length here=25cm
=0.25m
1/0.25= 100/25
=4( By using sexy theorem)
Focal length here=25cm
=0.25m
1/0.25= 100/25
=4( By using sexy theorem)
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