find the focal length of the combination lenses formed by placing is contact to thin of lenses of power +2.5D and -2D
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Answered by
2
Answer:
Explanation:
p=0.5d
f=1/0.5=2metres
Answered by
1
Answer:
Use- 1/u + 1/v = 1/f
Explanation:
Brainy Lady
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