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A lens of power +3.5 diopters is placed ...

A lens of power `+3.5` diopters is placed in contact with a lens of power `-2.5` diopter. The combination will behave like :

A

A convergent lens of focal length 100 cm

B

A divergent lens of focal length 100 cm

C

A convergent lens of focal 200 cm

D

A divergent lens of focal length 200 cm.

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