a lens of power +2D and lens of power -1D are placed in close contact with each other. the combination will be like?
A] a convergent lens of focal length 50 cm
B] a convergent lens of focal length 100 cm
C] a convergent lens of focal length 150 cm
D] a divergent lens of focal length 100cm
Answers
Answered by
2
Answer:
Given p=
f
1
, ⟹f=
p
1
p=2D ∴f=
2
1
m=50cm
Answered by
1
Explanation:
formula for finding the power of lens is p=100/f in
cm
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