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Two concave lenses L1 and L2 are kept in...

Two concave lenses `L_1 and L_2` are kept in contact with each other. If the space between the two lenses is filled with a material of smaller refractive index, the magnitude of the focal length of the combination

A

becomes undefined

B

remains unchanged

C

increases

D

decreases

Text Solution

Verified by Experts

The correct Answer is:
C
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