Two thin lenses of power +3.5D and -2.5D are placed in
contact. Find the power and focal length of the lens.
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Answered by
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power(p) =p1+p2=3.5+2.5=6.0D
focal length(f) =1/p=1/6=0.166meter
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jenny73:
i Think the answwr is wrong
bcoz the powers are +3.5D and -2.5 D
Answered by
0
p = 6D
1/f=1/3.5-1/2.5=0.166m
Solve nd get answer
dont u think the power should be 1 D
3.5D +(-2.5D) =1D
I think so....
u r right
then plz edit the answer
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