Two lenses have power of +1D and -2rrspectively. The power of combination is
Answers
Answered by
0
P=1/f
so,
1=1/f
=>f=1meter
and for -2 D
-2=1/f
=>f=-0.5 meter
so their combination
= 1+(-0.5)
= 0.5 m
P= 1/0.5
P=+2 Dioptre
.
.
.
.
.
.
.
Stay safe
Similar questions