1.

A convex lens has a focal length f.  It is cut into two parts along the dotted line as shown in the figure.  The focal length of each part will be                                                          [MP PET 2000]

A.            \[\frac{f}{2}\]
B.            f
C.            \[\frac{3}{2}f\]
D.            2f
Answer» E.


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