CGPET 2015 Solved Paper

Section: Physics

Question : 42 of 150

Marks: +1, -0

A concave lens is kept in contact with a convex lens of focal length 20‌cm. The combination works as convex lens of focal length 50‌cm. The power of concave lens is

P=−3.0D
P=+3.0D
P=−0.3D
P=+0.3D

Validate

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