Two thin convex lenses of focal lengths 4 cm and 8 cm are s – McqOptions

MCQOPTIONS

1.	Two thin convex lenses of focal lengths 4 cm and 8 cm are separated by a distance of 4 cm in air. The combination will have the focal length [NDA]
A.	4 cm
B.	8 cm
C.	12 cm
D.	32 cm
Answer» B. 8 cm

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