The power of two lenses are +6d and -4d.the power of the combination of two lenses is
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The power of lens = +6+(-4)
= +2 ...
Therefore the lens is convex and its nature is converging..
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Answer:
Explanation:
p1=6d
p2=-4d
p1+p2 =p
p=6d-4d
=2d
p=1/f
f= 1/p
f=1/2
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