A convex lens has power \( P \). It is cut into two halves along its principal axis. Further one...
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A convex lens has power \( P \). It is cut into two halves along its principal axis. Further one piece (out of the
\( \mathrm{P} \)
two halves) is cut into two halves perpendicular to
W
the principal axis (as shown in figure). Choose the incorrect option for the reported pieces.
(1) Power of \( L_{1}=\frac{P}{2} \)
(2) Power of \( L_{2}=\frac{P}{2} \)
(3) Power of \( L_{3}=\frac{P}{2} \)
(4) Power of \( L_{1}=P \)
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