Geometrical OpticsMedium
Question
Two lenses of power -15 D and + 5D are in contact with each other. The focal length of the combination is
Options
A.- 20 cm
B.- 10 cm
C.+ 20 cm
D.+ 10 cm
Solution
P = P1 + P2 = - 10
f =
⇒ - 0.1 m ⇒ - 10 cm
f =
⇒ - 0.1 m ⇒ - 10 cmCreate a free account to view solution
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