If the power of a lens is +2.5D. Calculate the radius of curvature (a). 80cm (b). 40cm (c). 25cm (d). 2.5cm?
JaynetIkeola
17 Jun, 2026
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primeinfinity33x2026
4 weeks ago
P=
f
1
where f is in metres.
Given:
P=+2.5D
f=
2.5
1
=0.4 m=40 cm
R=2f=2(40)=80 cm
Therefore,
80 cm
(A)
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