Question

There are 3. lenses placed in contact
with each
other having power
-3D, 2.5D G
-3.50 find their
combined power​

Answer 1

Answer:

P=1/f1 +1/f2 +1/f3

P=P1+P2+P3= (-3)+2.5+(-3.5)

P= -4 D

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