If two lenses of power + 1.5 D and + 1.0 D are placed in contact, then the effective power of combination will be
A. 2.5 D
B. 1.5 D
C. 0.5 D
D. 3.25 D
Answer:A
If two lenses of power + 1.5 D and + 1.0 D are placed in contact, then the effective power of combination will be
A. 2.5 D B. 1.5 D C. 0.5 D D. 3.25 D